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IWIS

About IWIS

IWIS for Porsche

IWIS parts for Porsche models from Design911

A Quick Look at IWIS

IWIS information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.

Choosing the Right Fit for Your Porsche

Where IWIS is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.

Typical reasons people replace these parts include preventative timing work during rebuilds, curing chain rattle, and maintaining stable valve timing on higher-mileage Porsche engines.
Common symptoms of timing wear include chain rattle on start-up, noisy operation as guides or tensioners age, timing deviation faults, and poor running if timing drifts.
Practical tip: chains rarely fail on their own — it is common to renew guides and tensioners at the same time, and to address any underlying oil-pressure issues.
Many timing-chain jobs on Porsche engines require specialist tools and strict adherence to timing procedures, so professional installation is often recommended.

Browse by Category

If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.

Engine Rebuild Parts — Engine rebuild parts are typically replaced during a planned overhaul or when symptoms point to internal wear, such as loss of compression, heavy oil consumption, persistent internal leaks, abnormal mechanical noises, or contamination found during inspection. Because labour dominates the cost, owners and specialists often renew bearings, chains, guides, seals, fasteners, and gaskets together while the engine is apart to improve reliability and reduce the need for repeat strip-downs.

Before committing to a rebuild, confirm the root cause with compression and leak-down testing, borescope inspection, and checks of ancillary systems.
When the engine is out, consider replacing hard-to-access wear items “while you’re in there” to avoid future labour duplication.

Chains & Tensioners — Timing chains, guides, and tensioners are renewed when wear or loss of tension risks unstable valve timing. Owners typically replace these during engine rebuilds, when start-up rattles or persistent chain noise suggest weak tensioners or worn guides, or as preventative maintenance on higher-mileage engines with unknown history.

An increasing duration or frequency of start-up rattle can be an early warning sign, especially if supported by timing deviation faults or guide debris found during servicing.
Good oil quality and pressure are critical for hydraulic tensioners, so follow the recommended oil grade and change intervals.

Explore IWIS at Design911

View the current IWIS range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

3 3 3

Timing Chain. Porsche 982 Boxster GTS / Cayman GTS / Spyder / GT4 4.0L 2017>>

0PB109252B/1

Product Information

Timing Chain.
Restore the heart of your engine’s timing system with this IWIS timing chain. The timing chain is designed for precise crank-to-cam synchronization on selected Porsche models. Built to exact factory specifications, it ensures accurate valve timing, smooth engine operation, and long-term durability under high rpm and high load conditions.
Sold Each.
x2 Required Per Car.

Fits:

Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
Porsche Boxster Spyder 718 4.0L (420 Bhp)
Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L

Diagram Ref No 1

What This Product Does:

The timing chain is a Porsche component designed for certain Porsche models (for example, the 718 Boxster, 718 Cayman, 718 Spyder, and possibly newer ones) to control the timing between the crankshaft and the camshaft(s).
Its role is to synchronise the valves opening/closing with piston movement — ensuring engine timing stays accurate under load.
As the chain rotates, it transmits mechanical power from the crankshaft to camshaft(s) so that the proper valve events happen at the correct times.

Symptoms Of Failure:

Rattling noise or audible ticking/knocking from the engine’s timing cover area — often when starting cold or idling.
Check Engine Light (CEL) setting, often related to cam/crank correlation or timing issues.
Poor engine performance — misfires, rough idle, reduced power or hesitation due to the timing going out of spec.
In worst-case: the engine may fail to start if the chain has jumped teeth or broken entirely.
High mileage wear: If the car has many km/miles, chain stretch becomes more likely.

Why Replacement Matters:

A properly functioning timing chain is critical for engine health. If timing is off, valves and pistons can collide (in interference engines), causing serious and expensive damage.
Replacing the chain before a major failure prevents catastrophic outcomes and engine downtime.
Over time, even if not broken, wear will degrade performance and reliability — so replacing a worn chain restores optimal operation.
Neglecting a bad chain can lead to much higher repair costs, such as cylinder head work or complete engine replacement.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

0PB109252B

0PB109252B

The product you are viewing cross references to these numbers

Timing Chain. Porsche 971.1 Panamera 4.0L Diesel 2017-18

9A710925203/1

Product Information

Timing Chain.
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. It forms part of the engine's mechanical timing system and helps maintain accurate synchronisation between the crankshaft, camshafts and associated timing components, depending on the specific engine configuration.

Fits:

Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18

Diagram Ref No 1

Operating continuously whenever the engine is running, the timing chain transfers rotational movement through the timing system and helps maintain the precise mechanical relationship between associated engine components. Accurate timing is essential for correct valve operation, smooth combustion, reliable starting and consistent engine performance.

Although timing chains are designed for extended service life, continuous mechanical loading, friction, heat and lubrication conditions can gradually cause wear to the chain pins, links and contact surfaces. Timing-chain guides, tensioners and sprockets can also deteriorate. Excessive wear can increase chain slack, produce abnormal mechanical noise and eventually affect timing accuracy.

What This Product Does:
The Timing Chain transfers mechanical rotation through the engine timing system and helps maintain the required synchronisation between associated rotating components.

Depending on the specific engine configuration, correct timing-chain operation helps support:

Accurate mechanical engine timing
Correct camshaft operation
Correct valve timing
Crankshaft and camshaft synchronisation
Reliable engine starting
Stable combustion
Smooth idle
Consistent engine performance
Predictable throttle response
Reliable power delivery

The chain must remain correctly tensioned, properly lubricated and securely engaged with its sprockets for reliable operation.

Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system deterioration include:

Metallic rattling or clattering
Timing-chain rattle during cold starts
Rattle immediately after engine start-up
Mechanical noise from the timing area
Noise that changes with engine RPM
Excessive chain slack
Timing-chain elongation
Excessive tensioner travel
Rough or unstable idle
Difficult or extended starting
Reduced engine performance
Poor throttle response
Engine misfires
Check-engine warning
Timing-related diagnostic fault codes
Camshaft-position faults
Crankshaft/camshaft correlation faults
Variable valve timing faults, where applicable
Visible chain or link wear
Worn or damaged timing-chain guides
Abnormal sprocket wear
Metal or plastic wear debris in the engine oil or filter

These symptoms do not automatically confirm timing-chain failure. Defective tensioners, damaged guides, worn sprockets, variable timing components, sensors, wiring faults or lubrication problems can produce similar symptoms.

Why Replacement Matters:
The Timing Chain performs a critical mechanical role within the engine timing system.

Replacing a confirmed worn, elongated or damaged timing chain can help:

Restore accurate mechanical synchronisation
Maintain correct engine timing
Restore dependable timing-chain operation
Reduce excessive chain slack
Reduce abnormal timing-chain noise
Maintain reliable sprocket engagement
Protect timing-chain guides
Protect associated sprockets
Reduce the risk of timing deviation
Reduce the risk of the chain jumping
Reduce the risk of chain derailment
Support smooth engine operation
Protect expensive internal engine components

Ignoring a confirmed timing-chain problem can allow wear to progress and potentially turn a timing-system repair into a significantly more extensive engine repair.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A710925203

9A710925203

9A710925202

The product you are viewing cross references to these numbers

Timing Chain. Porsche 971.1 Panamera 4.0L Diesel 2017-18

9A710922931/1

Product Information

Timing Chain.
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. It forms part of the engine's mechanical timing system, transferring rotational drive and helping maintain precise synchronisation between associated engine components.

Fits:

Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18

Diagram Ref No 16

The timing chain operates continuously whenever the engine is running, transferring rotational movement through the timing system and helping maintain the precise mechanical relationship required between associated engine components. Accurate timing is essential for correct valve operation, smooth combustion and dependable engine performance.

Although timing chains are designed for long service life, continuous mechanical loading, friction, heat and lubrication conditions can gradually cause wear to the chain pins, links and contact surfaces. Associated guides, tensioners and sprockets can also deteriorate. Excessive wear can increase chain slack, create abnormal mechanical noise and eventually affect timing accuracy.

What This Product Does:
The Timing Chain transfers mechanical rotation through the engine timing system and helps maintain the required synchronisation between associated rotating components.

Depending on the specific engine configuration, correct timing-chain operation helps support:

Accurate mechanical engine timing
Correct camshaft operation
Correct valve timing
Crankshaft and camshaft synchronisation
Stable combustion
Reliable engine starting
Smooth idle
Consistent engine performance
Predictable throttle response
Reliable power delivery

The chain must remain correctly tensioned, properly lubricated and accurately engaged with its sprockets to maintain reliable timing.

Symptoms Of Wear Or Failure:
Possible symptoms of deterioration within the timing chain or associated timing components include:

Metallic rattling or clattering
Timing-chain rattle during cold starts
Rattle immediately after engine start-up
Mechanical noise from the timing area
Noise that changes with engine RPM
Excessive chain slack
Timing-chain elongation
Excessive tensioner travel
Rough or unstable idle
Difficult or extended starting
Reduced engine performance
Poor throttle response
Engine misfires
Check-engine warning
Timing-related diagnostic fault codes
Camshaft-position faults
Crankshaft/camshaft correlation faults
Variable valve timing faults, where applicable
Visible chain or link wear
Worn or damaged timing-chain guides
Abnormal sprocket wear
Metal or plastic wear debris in the engine oil or filter

These symptoms do not automatically confirm that the chain itself is defective. Worn guides, defective tensioners, damaged sprockets, variable timing components, sensors, wiring or lubrication problems can produce similar symptoms.

Why Replacement Matters:
The Timing Chain performs a critical role within the engine timing system.

Replacing a confirmed worn, elongated or damaged chain can help:

Restore accurate mechanical synchronisation
Maintain correct engine timing
Restore dependable timing-chain operation
Reduce excessive chain slack
Reduce abnormal timing-chain noise
Maintain reliable sprocket engagement
Protect timing-chain guides
Protect associated sprockets
Reduce the risk of timing deviation
Reduce the risk of the chain jumping
Reduce the risk of chain derailment
Support smooth engine operation
Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain problem can allow wear to progress and potentially result in significantly more extensive engine damage.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A710922931

9A710922931

9A710922930

The product you are viewing cross references to these numbers

Drive Chain Oil Pump. Porsche 95B.2 Macan / Porsche 971 Panamera / 9YA Cayenne

PAC109229/1

Product Information

Drive Chain Oil Pump.
The IWIS Drive Chain Oil Pump is a replacement internal engine drive chain designed for the oil pump system on compatible Porsche applications.

Fits:

Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
Porsche 971.2 Panamera 2.9L V6 2021-23
Porsche 971.2 Panamera 4 2.9L V6 2021-23
Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
Porsche 971.2 Panamera 4S 2.9L V6 2021-23
Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21
Porsche 95B.3 Macan S Petrol 2.9L V6 (380Bhp) 2022>>
Porsche 95B.3 Macan GTS Petrol 2.9L V6 (440Bhp) 2022>>

Cars With Engine Codes:
DLZ / DLZB / DGR / DGRB / DGRC
CSZA / CSZ / CXTA / CXT / DGPA / DGP / CSZB / CSZ
DCAB / DCA / DCBE / DCB

Diagram Ref No 19

The engine oil pump must operate continuously while the engine is running to circulate lubricant to critical internal components. This drive chain transfers mechanical rotation through the oil pump drive system, allowing the pump to operate and maintain the oil circulation required for reliable engine lubrication.

Because the chain operates continuously under mechanical load, heat and friction, wear can gradually develop between the chain pins, links and associated drive surfaces. Excessive wear can increase chain slack, produce abnormal noise and eventually compromise the reliability of the oil pump drive.

What This Product Does:
The IWIS Oil Pump Drive Chain transfers mechanical rotation through the engine's drive system to the oil pump.

Once driven, the oil pump circulates engine oil through internal lubrication passages to critical components such as:

Crankshaft bearings
Connecting-rod bearings
Camshaft components
Valvetrain components
Timing chains and sprockets
Timing-chain guides and tensioners
Other moving internal engine surfaces

The drive chain itself does not create engine oil pressure. Its function is to mechanically drive the oil pump. The pump and associated lubrication system generate, regulate and distribute the required oil flow and pressure.

Symptoms Of Wear Or Failure:
Possible symptoms of deterioration within the chain or associated drive components include:

Metallic rattling or clattering
Mechanical chain noise
Rattle during engine start-up
Noise that changes with engine RPM
Excessive chain slack
Chain elongation
Excessive chain movement
Visible wear to chain links or pins
Abnormal sprocket wear
Worn or damaged chain guides, where applicable
Excessive tensioner travel, where applicable
Metal or plastic debris in the engine oil
Wear debris found in the oil filter
Oil-pressure warning light
Low oil-pressure warning
Oil-pressure-related diagnostic faults
Increased mechanical engine noise associated with inadequate lubrication

A low oil-pressure warning does not automatically confirm a failed oil pump drive chain.

Why Replacement Matters:
The IWIS Drive Chain Oil Pump performs a critical mechanical function within the engine lubrication system.

Replacing a confirmed worn, elongated or damaged chain can help:

Restore reliable oil pump drive
Maintain dependable engine oil circulation
Reduce excessive chain slack
Reduce abnormal mechanical noise
Restore reliable sprocket engagement
Protect associated drive sprockets
Protect guides and tensioning components
Reduce the risk of chain derailment
Reduce the risk of chain breakage
Support correct engine lubrication
Protect crankshaft and connecting-rod bearings
Protect camshaft and valvetrain components
Protect associated timing components
Reduce the risk of lubrication-related engine damage

Because the engine relies on continuous oil circulation, a confirmed problem within the oil pump drive system should not be ignored.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAC109229

9A710922920

PAC109229

The product you are viewing cross references to these numbers

Oil Pump Drive Chain. Porsche 971.1 / 971.2 Panamera / 9YA Cayenne 2017-23

PAB109229A/1

Product Information

Oil Pump Drive Chain.
The IWIS Oil Pump Drive Chain is a replacement internal engine drive component for compatible Porsche applications. It forms part of the engine lubrication system and provides the mechanical drive required to operate the oil pump.

Fits:

Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
Porsche 971.2 Panamera GTS 4.0L V8 2021-23
Porsche 971.2 Panamera GTS Sport Turismo 4.0L V8 2021-23
Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23

Diagram Ref No 19

Continuous oil circulation is essential for protecting bearings, crankshaft components, camshafts, valvetrain parts, timing components and other moving internal surfaces. The oil pump drive chain provides the mechanical connection required to keep the pump operating reliably.

Although designed for extended service life, the chain is continuously exposed to mechanical loading, friction, engine heat and lubrication conditions. Wear to the chain pins, links and associated drive components can gradually increase chain slack and compromise reliable oil pump drive.

What This Product Does:
The Oil Pump Drive Chain transfers rotational movement through the engine's mechanical drive system to the oil pump.

As the engine operates, the pump circulates oil through lubrication passages to critical components including:

Crankshaft bearings
Connecting-rod bearings
Camshaft components
Valvetrain components
Timing chains and sprockets
Chain guides and tensioners
Other moving internal engine surfaces

The drive chain itself does not generate oil pressure. Its function is to mechanically drive the oil pump. The pump and associated lubrication system generate, regulate and distribute the required oil flow and pressure.

Symptoms Of Wear Or Failure:
Possible symptoms of deterioration within the oil pump chain or associated drive system include:

Metallic rattling or clattering
Mechanical chain noise
Rattle during engine start-up
Noise that changes with engine RPM
Excessive chain slack
Chain elongation
Excessive chain movement
Visible wear to chain links or pins
Abnormal drive-sprocket wear
Worn or damaged chain guides, where fitted
Excessive tensioner travel, where applicable
Metal or plastic debris in the engine oil
Wear debris found in the oil filter
Oil-pressure warning light
Low oil-pressure warning
Oil-pressure-related diagnostic faults
Increased mechanical engine noise associated with inadequate lubrication

A low oil-pressure warning does not automatically mean the oil pump drive chain has failed.

Why Replacement Matters:
The Oil Pump Drive Chain performs a critical mechanical function within the engine lubrication system.

Replacing a confirmed worn, elongated or damaged drive chain can help:

Restore reliable oil pump drive
Maintain dependable engine oil circulation
Reduce excessive chain slack
Reduce abnormal mechanical noise
Restore reliable sprocket engagement
Protect associated drive sprockets
Protect chain guides and tensioning components
Reduce the risk of chain derailment
Reduce the risk of chain breakage
Maintain reliable engine lubrication
Protect crankshaft and connecting-rod bearings
Protect camshaft and valvetrain components
Protect associated timing components
Reduce the risk of lubrication-related engine damage

Because the engine relies on continuous oil circulation, a confirmed fault within the oil pump drive system should not be ignored.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAB109229A

PAB109229A

9A710922910

The product you are viewing cross references to these numbers

Timing Chain. Porsche 971.1 / 971.2 Panamera / 9YA Cayenne 2017-23

PAB109229C/1

Product Information

Timing Chain.

The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. It forms part of the engine's mechanical timing system, transferring rotational drive and helping maintain precise synchronisation between associated engine components.

Fits:

Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
Porsche 971.2 Panamera GTS 4.0L V8 2021-23
Porsche 971.2 Panamera GTS Sport Turismo 4.0L V8 2021-23
Porsche 971.2 Panamera Turbo S 4.0L V8 2021-23
Porsche 971.2 Panamera Turbo S Sport Turismo 4.0L V8 2021-23

Diagram Ref No 10

Timing chains operate continuously whenever the engine is running. Although designed for long service life, repeated mechanical loading, friction, heat and lubrication conditions can gradually cause wear to the chain pins, links and contact surfaces. Timing-chain guides, tensioners and sprockets may also deteriorate over time.

As wear increases, the effective length of the chain can increase, resulting in excessive slack, abnormal mechanical noise and potentially inaccurate engine timing. Severe deterioration can increase the risk of the chain jumping, derailing or failing.

What This Product Does:
The Timing Chain transfers mechanical rotation through the engine timing system while maintaining the required synchronisation between associated timing components.

Depending on the specific engine configuration, correct timing-chain operation helps support:

Accurate engine timing
Correct camshaft operation
Correct valve timing
Reliable mechanical synchronisation
Consistent rotational drive
Stable combustion
Smooth engine operation
Predictable throttle response
Consistent power delivery

The chain must remain correctly tensioned, properly lubricated and accurately engaged with its sprockets for reliable operation.

Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system deterioration include:

Metallic rattling or clattering
Timing-chain rattle during cold starts
Rattle immediately after engine start-up
Mechanical noise from the timing area
Noise that changes with engine RPM
Excessive chain slack
Timing-chain elongation
Excessive tensioner travel
Rough or irregular engine operation
Unstable idle
Difficult or extended starting
Reduced engine performance
Poor throttle response
Engine misfires
Check-engine warning
Timing-related diagnostic fault codes
Camshaft-position faults
Crankshaft/camshaft correlation faults
Variable camshaft timing faults, where applicable
Visible chain wear
Worn or damaged timing-chain guides
Abnormal sprocket wear
Metal or plastic wear debris in the engine oil or filter

These symptoms do not automatically confirm that the chain itself has failed. Defective tensioners, worn guides, damaged sprockets, variable timing components, sensors, wiring or lubrication problems can produce similar symptoms.

Why Replacement Matters:
The Timing Chain is a critical internal engine component.

Replacing a confirmed worn, elongated or damaged chain can help:

Restore accurate mechanical synchronisation
Maintain correct engine timing
Restore dependable timing-chain operation
Reduce excessive chain slack
Reduce abnormal chain noise
Maintain reliable sprocket engagement
Protect timing-chain guides
Protect associated sprockets
Reduce the risk of timing deviation
Reduce the risk of the chain jumping
Reduce the risk of chain derailment
Support smooth engine operation
Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain fault can allow deterioration to progress and potentially result in a much more extensive engine repair.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAB109229C

PAB109229C

9A710922900

The product you are viewing cross references to these numbers

Timing Chain, Oil Pump. Porsche 971.1 Panamera 4.0L Diesel 2017-18

9A710910602/1

Product Information

Timing Chain, Oil Pump.
The IWIS Timing Chain, Oil Pump is a replacement internal engine drive chain for compatible Porsche applications. It forms part of the engine lubrication system and provides the mechanical drive required to operate the engine oil pump.

Fits:

Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18

Diagram Ref No 9

The oil pump must operate whenever the engine is running to circulate lubricant through the engine. This chain forms part of the mechanical drive system that keeps the pump operating, supporting lubrication of bearings, crankshaft components, camshaft and valvetrain parts, timing components and other moving internal surfaces.

Although designed for extended service life, an oil pump drive chain is subjected to continuous mechanical loading, friction and heat. Wear to the chain links, pins and associated sprockets can gradually increase chain slack and reduce the reliability of the drive system.

What This Product Does:
The oil pump chain transfers mechanical rotation through the engine's oil pump drive system, allowing the oil pump to operate continuously while the engine is running.

Reliable pump operation allows engine oil to circulate to critical components including:

Crankshaft bearings
Connecting-rod bearings
Camshaft components
Valvetrain components
Timing chains and sprockets
Timing guides and tensioners
Other internal moving and friction surfaces

The chain itself does not generate engine oil pressure. It provides mechanical drive to the oil pump; the pump and lubrication system are responsible for producing, regulating and distributing the required oil flow and pressure.

Symptoms Of Wear Or Failure:
Possible symptoms of deterioration within the oil pump chain or associated drive components include:

Metallic rattling or clattering
Mechanical chain noise
Rattle during engine start-up
Noise that changes with engine RPM
Excessive chain slack
Chain elongation
Excessive chain movement
Visible wear to chain links or pins
Abnormal sprocket wear
Worn or damaged guides, where fitted
Excessive tensioner travel, where applicable
Metal or plastic debris in the engine oil
Wear debris in the oil filter
Oil-pressure warning light
Low oil-pressure warning
Oil-pressure-related diagnostic faults
Increased mechanical engine noise associated with inadequate lubrication

A low oil-pressure warning does not automatically indicate a failed oil pump chain. Low oil level, oil pump wear, a restricted pickup, pressure-control problems, incorrect oil, excessive bearing clearance or an oil-pressure sensor fault can produce similar symptoms.

Why Replacement Matters:
The Oil Pump Timing Chain performs a critical mechanical function within the engine lubrication system.

Replacing a confirmed worn, elongated or damaged chain can help:

Restore reliable oil pump drive
Maintain dependable engine oil circulation
Reduce excessive chain slack
Reduce abnormal mechanical noise
Restore reliable sprocket engagement
Protect associated sprockets
Protect guides and tensioning components
Reduce the risk of chain derailment
Reduce the risk of chain breakage
Support correct engine lubrication
Protect bearings and other internal components
Reduce the risk of lubrication-related engine damage

Because the engine depends on continuous oil circulation, a confirmed fault within the oil pump drive system should not be ignored.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A710910602

9A710910602

The product you are viewing cross references to these numbers

3 3 3

Timing Chain. Porsche 982 Boxster / Cayman / 991.2 2017>>

9A210514801/1

Product Information

Timing Chain.
Restore the timing drive system of your Porsche with this IWIS timing chain. Designed for models such as the 911 991.2 and 718 Boxster/Cayman, this chain ensures the crankshaft and camshafts stay in perfect synchronisation. Over time chains can stretch or wear, leading to noise, timing drift or engine issues. Replace proactively to maintain performance, reliability and peace of mind.
Sold Each.
x2 Required Per Car.

Fits:

Porsche Boxster 718 2.0L Manual (300 Bhp)
Porsche Boxster 718 2.0L PDK (300 Bhp)
Porsche Boxster S 718 2.5L Manual (350 Bhp)
Porsche Boxster S 718 2.5L PDK (350 Bhp)
Porsche Boxster T 718 2.0L Manual (300 Bhp)
Porsche Boxster T 718 2.0L PDK (300 Bhp)
Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
Porsche Boxster GTS 718 2.5L PDK (365 Bhp
Porsche Cayman 718 2.0L Manual (300Bhp)
Porsche Cayman 718 2.0L PDK (300Bhp)
Porsche Cayman S 718 2.5L Manual (350Bhp)
Porsche Cayman S 718 2.5L PDK (350Bhp)
Porsche Cayman T 718 2.0L Manual (300Bhp)
Porsche Cayman T 718 2.0L PDK (300 Bhp)
Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19

Diagram Ref No 1

What This Product Does:

The timing chain synchronises the crankshaft’s rotation with the camshaft(s), ensuring valves open and close at the correct times in relation to piston movement. Without correct timing the engine cannot run properly.
Over time, because the chain is under constant load, it may stretch or wear, tensioners can degrade, guides may wear out. When this happens, slack can appear in the drive which compromises timing, performance, noise, and in worst case leads to engine damage.
This chain is the core drive chain for a given Porsche engine — making it a critical component of engine operation.

When You Should Consider Replacement:

Noise from the timing cover area (rattling or clattering, especially at cold start or idle) — a sign of slack chain or failing guides.
Engine performance issues: If you experience misfires, power loss, or the engine is not running smoothly, timing chain wear could be a cause.
Diagnostic codes indicating camshaft timing deviation or chain position errors — the chain may have stretched or the drive system may have issues.
High mileage / old age / major service: If the vehicle has substantial miles, or if you are performing major engine service (timing cover off, chain exposed), it’s prudent to install a new chain rather than rely on a worn one.
Visual inspection (if accessible) showing chain wear, guide rail wear or tensioner issues.
If the chain breaks (rare) the engine will not run; therefore proactive replacement pays in reliability.

Why Replacement Matters:

Engine integrity and longevity: A failed timing chain can lead to catastrophic engine damage (valves colliding with pistons, etc). Replacing the chain reduces that risk.
Performance & timing accuracy: A new chain ensures timing is correct and optimised — improving engine smoothness, power delivery and reliability.
Noise & NVH improvement: Replacing a worn chain can remove unwanted noise (slap, rattle) from the engine front.
Cost-efficient preventive maintenance: Since accessing the timing chain involves high labour (engine front cover, etc), replacing the chain while you are already in has a better return on investment than waiting for failure.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A210514801

9A210514801

The product you are viewing cross references to these numbers

Timing Chain, Oil Pump / Crankshaft. Porsche 991.1 R / GT3 RS 4.0L 2015-16

9A110523391/1

Product Information

Timing Chain, Oil Pump / Crankshaft.
The IWIS Timing Chain, Oil Pump / Crankshaft is a replacement internal engine drive chain for compatible Porsche applications. It forms part of the engine lubrication system and provides the mechanical drive connection between the crankshaft drive and engine oil pump.

Fits:

Porsche 991.1 R 4.0L (500 Bhp) 2016
Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16

Diagram Ref No 2

The oil pump must operate continuously while the engine is running to circulate lubricant to critical internal components. This chain provides the mechanical drive required for that operation, helping maintain dependable engine lubrication and protection of bearings, timing components and other moving surfaces.

Although designed for long service life, continuous mechanical loading, heat, friction and lubrication conditions can gradually cause wear to the chain and associated components. Excessive chain elongation or damage can create slack, abnormal noise and, in severe cases, compromise the mechanical drive to the oil pump.

What This Product Does:
The chain transfers rotational movement from the crankshaft drive system to the engine oil pump.

As the engine rotates, this mechanical drive allows the oil pump to circulate engine oil through the lubrication system.

Reliable oil circulation supports lubrication of critical components such as:

Crankshaft bearings
Connecting-rod bearings
Camshaft and valvetrain components
Timing chains and sprockets
Timing-chain guides and tensioners
Other internal moving components and friction surfaces

The chain itself does not generate oil pressure. Its purpose is to mechanically drive the oil pump. The pump, pressure-control system and lubrication circuit are responsible for producing and regulating oil flow and pressure.

Symptoms Of Wear Or Failure:
Possible symptoms of deterioration within the chain or associated drive system include:

Metallic rattling or clattering
Mechanical chain noise from the engine
Noise that changes with engine RPM
Rattle during engine start-up
Excessive chain slack
Chain elongation
Excessive chain movement
Visible wear to chain links or pins
Abnormal sprocket wear
Worn or damaged chain guides, where fitted
Excessive tensioner travel, where applicable
Metal or plastic debris in the engine oil
Wear debris found in the oil filter
Oil-pressure warning light
Low oil-pressure warning message
Oil-pressure-related diagnostic faults
Abnormal engine noise associated with inadequate lubrication

An oil-pressure warning does not automatically mean the chain has failed. Low oil level, oil pump wear, a blocked pickup, pressure-regulation faults, excessive bearing clearance, incorrect oil or a defective pressure sensor can produce similar symptoms.

Why Replacement Matters:
The Timing Chain performs a critical mechanical role within the engine lubrication system.

Replacing a confirmed worn, elongated or damaged chain can help:

Restore reliable oil pump drive
Maintain dependable engine oil circulation
Reduce excessive chain slack
Reduce abnormal mechanical noise
Restore reliable sprocket engagement
Protect associated sprockets
Protect chain guides and tensioning components
Reduce the risk of chain derailment
Reduce the risk of chain breakage
Support correct engine lubrication
Protect bearings and other internal components
Reduce the risk of lubrication-related engine damage

Because reliable lubrication is fundamental to engine operation, confirmed wear or damage within the oil pump drive system should not be ignored.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A110523391

9A110523391

The product you are viewing cross references to these numbers

Timing Chain, Oil Pump / Crankshaft. Porsche 991 / 992 R / GT3 / GT3 RS / 982 Spyder RS / GT4 RS

0PB109229B/1

Product Information

Porsche Boxster Spyder RS 718 4.0L 01/2019>>
Porsche 991.1 R 4.0L (500 Bhp) 2016
Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Porsche 991.2 Speedster 4.0L (510Bhp) 2019
Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
Porsche 992.1 GT3 RS 4.0L 2022-24
Porsche 992.2 GT3 2025>>
Porsche Cayman GT4 RS 718 4.0L

Diagram Ref No 2

The chain transfers rotational drive from the engine to the oil pump, allowing the pump to circulate engine oil through critical lubrication points. Reliable operation is essential because the engine depends on continuous oil circulation to lubricate bearings, crankshaft journals, camshaft components, timing components and other moving internal parts.

Although designed for extended service life, an oil pump drive chain operates continuously whenever the engine is running. Wear to the chain, sprockets, guides or tensioning components can eventually cause excessive slack, abnormal noise or unreliable oil pump drive.

What This Product Does:
The oil pump/crankshaft chain transfers mechanical rotation from the crankshaft drive system to the engine oil pump.

As the engine runs, the chain keeps the oil pump mechanically driven so that it can circulate engine oil throughout the lubrication system.

This supports lubrication of critical components including:

Crankshaft bearings
Connecting-rod bearings
Camshaft components
Valvetrain components
Timing-system components
Other internal moving and friction surfaces

The chain itself does not create oil pressure. Its function is to drive the oil pump; the pump and lubrication system are responsible for generating and maintaining the required oil flow and pressure.

Symptoms Of Wear Or Failure:
Possible symptoms of chain or associated drive-system deterioration include:

Metallic rattling or clattering from the engine
Mechanical chain noise
Noise that changes with engine RPM
Excessive chain slack
Chain elongation
Visible wear to chain links or pins
Abnormal sprocket wear
Worn or damaged guides, where fitted
Excessive tensioner movement, where applicable
Metal or plastic debris in the engine oil
Debris found in the oil filter
Oil-pressure warning light
Low oil-pressure warning message
Oil-pressure-related diagnostic faults
Abnormal engine noise caused by inadequate lubrication

A low oil-pressure warning does not automatically mean the drive chain has failed. Low oil level, a worn oil pump, blocked oil passages, pickup problems, incorrect oil, pressure-control faults, bearing wear or an oil-pressure sensor problem can produce similar symptoms.

Why Replacement Matters:
The Oil Pump / Crankshaft Timing Chain performs a critical mechanical function within the engine lubrication system.

Replacing a confirmed worn, elongated or damaged chain can help:

Restore reliable oil pump drive
Maintain dependable oil circulation
Reduce excessive chain slack
Reduce abnormal mechanical noise
Restore reliable sprocket engagement
Protect associated sprockets and guides
Reduce the risk of chain derailment
Reduce the risk of chain breakage
Support correct engine lubrication
Protect bearings and other internal engine components
Reduce the risk of lubrication-related engine damage

Because the oil pump is essential to engine survival, a confirmed fault in its mechanical drive system should not be ignored.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

0PB109229B

0PB109229B

9A110523390

The product you are viewing cross references to these numbers

Timing Chain. Porsche 987.2 / 981 / 982 Boxster / Cayman / 997.2 / 991.1 / 991.2 2009>>

9A110523302/2

Product Information

Timing Chain.
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. The timing chain forms part of the engine's mechanical timing system, helping maintain accurate synchronisation between the crankshaft, camshaft drive and associated timing components.

Fits:

Porsche Boxster 987 MKII 2.9L 2009-2012
Porsche Boxster S 987 MKII 3.4L 2009-2012
Porsche Boxster 981 2.7L 2012-16
Porsche Boxster 981 S / GTS 3.4L 2012-16
Porsche Boxster 981 Spyder 3.8L 2016
Porsche Boxster 718 2.0L Manual (300 Bhp)
Porsche Boxster 718 2.0L PDK (300 Bhp)
Porsche Boxster S 718 2.5L Manual (350 Bhp)
Porsche Boxster S 718 2.5L PDK (350 Bhp)
Porsche Boxster T 718 2.0L Manual (300 Bhp)
Porsche Boxster T 718 2.0L PDK (300 Bhp)
Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
Porsche 997 MKII Carrera C2 3.6L 2009-12
Porsche 997 MKII Carrera C4 3.6L 2009-12
Porsche 997 MKII Carrera C2S 3.8L 2009-12
Porsche 997 MKII Carrera C4S 3.8L 2009-12
Porsche 997 MKII Turbo 2010-13
Porsche 997 MKII GT2 RS 2011-13
Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
Porsche 991.1 R 4.0L (500 Bhp) 2016
Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
Porsche 991.2 Speedster 4.0L (510Bhp) 2019
Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Porsche Cayman 2.9L 987C MKII 2009-12
Porsche Cayman S / R 3.4L 987C MKII 2009-12
Porsche Cayman 2.7L 981 2013-16
Porsche Cayman S / GTS 3.4L 981 2013-16
Porsche Cayman GT4 3.8L 2015-16
Porsche Cayman 718 2.0L Manual (300Bhp)
Porsche Cayman 718 2.0L PDK (300Bhp)
Porsche Cayman S 718 2.5L Manual (350Bhp)
Porsche Cayman S 718 2.5L PDK (350Bhp)
Porsche Cayman T 718 2.0L Manual (300Bhp)
Porsche Cayman T 718 2.0L PDK (300 Bhp)
Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
Porsche Cayman GTS 718 2.5L PDK (365 Bhp)

Diagram Ref No 10

What This Product Does:

The timing chain synchronises the crankshaft with other components — here especially linking to the oil pump / cam drive path — so that the engine’s valves operate at the correct times relative to piston movement.
Over time, chains can stretch, guides may wear, tensioners may degrade — all of which will allow slack in the drive, noise, timing drift or even failure.
Essentially, this chain is a critical link in the engine’s timing system — it must stay within spec to ensure the engine runs as designed.

When You Should Consider Replacement:

Rattling or clattering noise from the engine’s timing‐cover area, especially on cold start, idle or at low revs. Slack chain often causes this.
Timing-related fault codes — cam/ crank correlation errors, or variable valve timing issues that could stem from chain/tensioning irregularity.
Loss of engine performance, rough running, mis-fires, or inconsistent response — because timing drift can affect the engine’s breathing and ignition.
High mileage or long service interval without chain replacement — wear accumulates even if symptoms are subtle.
Visual inspection (where possible) may show wear or elongation in chain links, damaged guides or tensioner issues.

Why Replacement Matters:

Engine protection: A failed or excessively worn timing chain can cause piston-valve contact, or major internal engine damage. Replacing the chain significantly reduces that risk.
Maintains timing accuracy: A new chain ensures correct timing events — vital for power delivery, engine smoothness, efficiency and longevity.
Noise & NVH improvement: Slack or worn chain components often produce unwanted noise and degrade refinement — renewed parts improve comfort.
Cost-efficiency: Since accessing the chain involves significant labour (front engine cover, oil pump, possibly other removal), replacing the chain while you’re already in saves repeated work.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A110523302

9A110523302

The product you are viewing cross references to these numbers

Timing Chain For Camshaft / Crankshaft. Porsche 991.1 / 991.2 R / GT3 RS / Speedster

0PB109252C/1

Product Information

Timing Chain For Camshaft / Crankshaft.
The IWIS Timing Chain For Camshaft / Crankshaft is a replacement internal engine timing component for compatible Porsche applications. It forms part of the mechanical timing drive responsible for maintaining the precise relationship between crankshaft rotation and camshaft operation.
Sold Each.
x2 Required Per Engine.

Fits:

Porsche 991.1 R 4.0L (500 Bhp) 2016
Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Porsche 991.2 Speedster 4.0L (510Bhp) 2019
Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19

Diagram Ref No 1

The timing chain transfers rotational drive from the crankshaft through the timing mechanism so that camshaft operation remains correctly synchronised with piston movement. This precise relationship allows the intake and exhaust valves to operate at the correct points during the engine's combustion cycle.

Timing chains are designed for extended service life, but continuous mechanical loading, friction, heat and lubrication conditions can gradually cause wear. Chain elongation, worn guides, defective tensioners or damaged sprockets can create excessive slack and affect timing accuracy.

If deterioration becomes severe enough for the chain to jump, derail or fail, incorrect valve timing and potentially serious internal engine damage can result.

What This Product Does:
The camshaft/crankshaft timing chain provides the mechanical connection required to keep crankshaft rotation and camshaft operation correctly synchronised.

As the crankshaft rotates, the timing drive transfers this movement to the camshaft timing system.

This helps maintain:

Correct crankshaft-to-camshaft synchronisation
Accurate valve timing
Correct intake valve operation
Correct exhaust valve operation
Reliable mechanical timing
Smooth combustion
Stable engine operation
Consistent power delivery

Correct timing-chain tension and accurate engagement with the associated sprockets are essential for maintaining this relationship.

Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system deterioration include:

Metallic rattling or clattering from the timing area
Timing-chain rattle during cold starts
Noise immediately after engine start-up
Excessive chain slack
Timing-chain elongation
Mechanical noise that changes with engine RPM
Rough or irregular engine operation
Unstable idle
Difficult or extended starting
Reduced engine performance
Poor throttle response
Misfires
Engine warning light
Timing-related diagnostic fault codes
Camshaft-position faults
Crankshaft-position faults
Crankshaft/camshaft correlation faults
Variable camshaft timing faults where applicable
Visible chain wear during inspection
Worn or broken timing-chain guides
Excessive tensioner travel
Abnormal sprocket wear
Metal or plastic debris in the engine oil or filter

These symptoms can also be caused by guides, tensioners, sprockets, variable timing components, sensors or lubrication problems. Proper diagnosis is therefore important before individual components are replaced.

Why Replacement Matters:
The Timing Chain is a critical component within the engine timing system.

Replacing a confirmed worn, elongated or damaged chain can help:

Restore accurate crankshaft/camshaft synchronisation
Maintain correct valve timing
Restore dependable mechanical timing
Reduce excessive chain slack
Reduce abnormal timing-chain noise
Maintain reliable sprocket engagement
Protect timing-chain guides
Protect associated sprockets
Reduce the risk of timing deviation
Reduce the risk of the chain jumping
Reduce the risk of chain derailment
Support smooth engine operation
Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain problem can allow wear to progress and substantially increase the cost of the eventual repair.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

0PB109252C

0PB109252C

9A110514291

The product you are viewing cross references to these numbers

Timing Chain. Porsche 997 GT3 / 991.1 GT3

99710555190/1

Product Information

Timing Chain.
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. It forms part of the engine's mechanical timing drive and helps maintain the precise synchronisation required between associated rotating and valve-train components.

Fits:

Porsche 997 MK1 GT3 / GT3 RS 2007-09
Porsche 997 MKII GT3 / GT3 RS 2010-11
Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16

Diagram Ref No 27

Timing chains are designed for extended service life, but they operate continuously whenever the engine is running. Repeated mechanical loading, friction, heat and lubrication conditions can gradually cause wear to the chain pins, links and contact surfaces. Associated guides, tensioners and sprockets can also deteriorate over time.

As wear develops, the chain's effective length can increase, creating excessive slack and potentially affecting timing accuracy. Severe deterioration can allow the chain to jump, derail or fail, creating a risk of significant internal engine damage.

What This Product Does:
The timing chain transfers rotational movement through the engine timing system while maintaining the required mechanical relationship between associated components.

Depending on the specific engine configuration, it helps support:

Accurate engine timing
Correct camshaft operation
Correct valve timing
Reliable mechanical synchronisation
Consistent rotational drive
Smooth engine operation
Stable combustion
Consistent power delivery

Correct chain tension, adequate lubrication and accurate engagement with the associated sprockets are essential for dependable timing-system operation.

Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system wear include:

Metallic rattling or clattering
Rattle during cold starts
Noise immediately after engine start-up
Mechanical noise from the timing area
Excessive chain slack
Timing-chain elongation
Noise that changes with engine RPM
Rough or irregular engine operation
Unstable idle
Difficult starting
Reduced engine performance
Misfires
Engine warning light
Timing-related diagnostic fault codes
Camshaft-position faults
Crankshaft/camshaft correlation faults
Variable camshaft timing faults where applicable
Visible chain wear during inspection
Worn or damaged chain guides
Abnormal sprocket wear
Metal or plastic debris in the engine oil or oil filter

These symptoms do not automatically mean the chain itself has failed. Guides, tensioners, sprockets, lubrication problems and other engine faults can produce similar symptoms, making correct diagnosis important.

Why Replacement Matters:
The timing chain is a critical internal engine component. Once excessive wear, elongation or physical damage has been confirmed, replacement is important for restoring dependable timing-system operation.

Replacing a worn IWIS Timing Chain can help:

Restore reliable mechanical synchronisation
Maintain accurate engine timing
Restore correct chain operation
Reduce excessive chain slack
Reduce abnormal timing-chain noise
Maintain reliable sprocket engagement
Protect timing-chain guides
Protect associated sprockets
Reduce the risk of timing deviation
Reduce the risk of the chain jumping
Reduce the risk of chain derailment
Support smooth engine operation
Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain problem may allow deterioration to progress and substantially increase the cost of the eventual repair.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99710555190

99710555190

The product you are viewing cross references to these numbers

Timing Chain. Porsche 997 Turbo / GT2 MKI / MKII 3.6L M97.70 2007-11

99710555171/1

Product Information

Timing Chain.
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. It forms part of the engine's mechanical timing drive and helps maintain the precise synchronisation required between associated rotating and valve-train components.
Sold Each.
x2 Required Per Car.

Fits:

Porsche 997 MK1 TURBO 2007-09
Porsche 997 MK1 GT2 2007-09
Porsche 997 MKII Turbo 2010-11
Porsche 997 MKII GT2 RS 2011-11

Diagram Ref No 29

What This Product Does:

The timing chain transfers rotational motion from the crankshaft or intermediate shaft to the camshaft(s) (and/or to the secondary shaft) allowing valves to open and close in synchrony with piston movement.
A “duplex” chain (two rows of links) provides greater strength and durability under the high loads and high engine speeds typical of a Porsche 911 performance engine.
Because the chain drives critical timing, any slack, wear or movement will affect valve timing, ignition timing, engine management, and can result in noise, performance loss or engine damage.
In this context, this chain is often replaced as part of a full timing drive overhaul (including guides, rails, tensioners) rather than alone.

Symptoms & When You Should Replace:

Rattling or clattering noise from the front of the engine (timing cover area), often heard at idle or on start-up — typical of chain slack.
Check engine light related to camshaft or timing chain position sensors, or codes showing timing deviation.
Loss of engine power, mis-firing, rough running — could indicate timing drift due to chain wear.
High mileage or older engine with original chain: preventive replacement recommended to avoid catastrophic failure.
During major engine service (removing timing cover, replacing chains/guides) — because labour is high, replacing the chain proactively makes sense.
If inspection reveals visible wear: elongated chain links, damaged chain guides or missing/broken tensioner components.

Why Replacement Matters:

Protects the entire engine: A failed timing chain can lead to valve-to-piston contact, major damage and extremely costly repairs — replacing the chain is preventive.
Restores proper timing & performance: A new chain ensures correct valve and ignition timing, helping engine run smoothly, powerfully and reliably.
Eliminates noise & wear risk: Worn chains and guides cause noise and degrade timing drive integrity — a new chain reduces risk and improves sound.
Cost-efficient when engine is opened: Since accessing the chain involves removing major parts (timing cover, possibly front of engine), replacing the chain while it’s open saves re-labour.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99710555171

99710555171

The product you are viewing cross references to these numbers

Timing Chain. Porsche Carrera GT 2003-06

98010532100/1

Product Information

Timing Chain.
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. It forms part of the engine's mechanical timing system, transferring rotational drive between associated timing components and helping maintain the precise synchronisation required for correct engine operation.
Sold Each.
x2 Required Per Engine.

Fits:

Porsche Carrera GT 2003-06

Diagram Ref No 15

The timing chain transfers rotational drive between associated timing components, helping maintain the correct relationship between crankshaft and camshaft operation. Accurate timing is essential because the pistons and valves must operate in a precisely coordinated sequence throughout the combustion cycle.

Although timing chains are designed for long service life, continuous mechanical loading, heat and friction can gradually cause wear. Chain elongation, worn guides, defective tensioners or damaged sprockets can introduce excessive slack and affect timing accuracy.

What This Product Does:
The timing chain forms part of the mechanical drive responsible for keeping critical internal engine components correctly synchronised.

Its functions include:

Transferring rotational drive through the timing system
Maintaining accurate crankshaft-to-camshaft timing
Supporting correct camshaft operation
Maintaining correct valve timing
Keeping associated timing components synchronised
Supporting smooth and consistent engine operation

The chain must remain correctly tensioned and accurately engaged with its sprockets to maintain the required timing relationship.

Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system deterioration include:

Metallic rattling or clattering
Timing-chain noise during cold starts
Rattle immediately after engine start-up
Excessive chain slack
Timing-chain elongation
Mechanical noise from the timing area
Noise that changes with engine RPM
Rough or irregular engine operation
Unstable idle
Difficult starting
Reduced engine performance
Misfires
Engine warning light
Timing-related diagnostic fault codes
Camshaft-position faults
Crankshaft/camshaft correlation faults
Visible chain wear
Worn or broken chain guides
Abnormal sprocket wear
Metal or plastic debris in the engine oil or filter

These symptoms are not exclusive to the timing chain. Accurate diagnosis should also consider guides, tensioners, sprockets, lubrication and other timing-system components.

Why Replacement Matters:
The timing chain is a critical internal engine component. Once excessive wear, elongation or physical damage has been confirmed, replacement is important for maintaining reliable mechanical timing.

Replacing a worn Timing Chain can help:

Restore dependable timing-chain operation
Maintain accurate engine timing
Restore correct mechanical synchronisation
Reduce excessive chain slack
Reduce abnormal timing-chain noise
Maintain reliable sprocket engagement
Protect associated guides and sprockets
Reduce the risk of timing deviation
Reduce the risk of the chain jumping
Reduce the risk of chain derailment
Support smooth engine operation
Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain problem may allow deterioration to progress and significantly increase repair costs.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

98010532100

98010532100

The product you are viewing cross references to these numbers

Timing Chain. Porsche 996 GT3 / 997 GT3

95910555201/1

Product Information

Timing Chain.
The IWIS Timing Chain is a replacement internal engine timing component for compatible Porsche applications. Designed to operate as part of the engine's mechanical timing drive, the chain transfers rotational movement between associated timing components while maintaining the precise mechanical relationship required for correct engine operation.

Fits:

Porsche 996 GT3 MKI 1999-02
Porsche 996 GT3 MKII 2003>>
Porsche 996 GT3 RS 2003-04
Porsche 997 MK1 GT3 / GT3 RS 2007-09

Diagram Ref No 23

Timing chains are designed for extended service life, but they are still subject to continuous mechanical loading, friction and heat. Wear can gradually develop at the chain pins, links and contact surfaces, while associated guides, tensioners and sprockets can also deteriorate.

Excessive chain wear or elongation can create additional slack, abnormal mechanical noise and inaccurate engine timing. If a severely worn chain jumps, derails or fails, significant internal engine damage may result.

What This Product Does:
The timing chain forms part of the mechanical system responsible for keeping critical engine components correctly synchronised.

Its primary role is to transfer rotational drive while maintaining the required timing relationship between associated components.

Depending on the engine's timing-system design, this helps support:

Accurate engine timing
Correct camshaft operation
Correct valve timing
Reliable mechanical synchronisation
Consistent rotational drive
Smooth engine operation
Stable combustion
Predictable power delivery

Correct chain tension and accurate engagement with the associated sprockets are essential for reliable timing-system operation.

Symptoms Of Wear Or Failure:

Possible symptoms of timing-chain or related timing-system wear include:
Metallic rattling or clattering
Timing-chain noise during cold starts
Rattle immediately after starting
Excessive chain slack
Timing-chain elongation
Mechanical noise at idle
Noise that changes with engine RPM
Rough or irregular engine operation
Unstable idle
Difficult starting
Reduced engine performance
Engine warning light
Timing-related diagnostic fault codes
Crankshaft/camshaft correlation faults where applicable
MisfiresVisible chain wear during inspection
Damaged or excessively worn chain guides
Abnormal sprocket wearMetal or plastic debris in the engine oil or filter

These symptoms are not exclusive to the chain itself. Guides, tensioners, sprockets, lubrication problems and other engine faults can produce similar symptoms, so correct diagnosis is essential.

Why Replacement Matters:
The timing chain is a critical internal engine component.

Replacing a confirmed worn, elongated or damaged IWIS Timing Chain can help:

Restore dependable timing-system operation
Maintain accurate mechanical synchronisation
Restore correct timing-chain tension
Reduce excessive chain movement
Reduce abnormal timing-chain noise
Maintain reliable sprocket engagement
Protect associated chain guides
Protect timing sprockets
Reduce the risk of timing deviation
Reduce the risk of the chain jumping or derailing
Support smooth engine operation
Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain problem can allow wear to progress and increase the likelihood of a substantially more expensive repair.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

95910555201

95910555201

The product you are viewing cross references to these numbers

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