Chains & Tensioners

Timing Chain, Centre Upper.
The IWIS Timing Chain, Centre Upper is a replacement internal engine timing component for compatible Porsche applications. Located within the centre upper section of the timing system, the chain transfers rotational drive between associated timing components and helps maintain the precise mechanical synchronisation required for correct engine operation.

Fits:

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 1

Timing chains operate continuously whenever the engine is running and are subjected to repeated mechanical loads. Although designed for long service life, wear can develop in the chain, guides, tensioners and sprockets over time.

A worn or elongated timing chain can develop excessive slack, create abnormal mechanical noise and affect timing accuracy. If deterioration becomes severe enough for the chain to jump or fail, significant internal engine damage may result.

What This Product Does:
The centre upper timing chain forms part of the engine's mechanical timing drive.

Its primary purpose is to transmit rotational movement between associated timing-system components while maintaining their required mechanical relationship.

This helps support:

• Accurate operation of the engine timing system
• Correct synchronisation of associated rotating components
• Reliable transfer of mechanical drive
• Stable engine operation
• Consistent timing throughout the engine-speed range
• Reliable operation of associated timing components

Correct chain tension and engagement with the sprockets are essential for maintaining accurate mechanical timing.

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

• Metallic rattling from the timing area
• Clattering or chain noise
• Rattle during cold start
• Excessive chain slack
• Timing-chain elongation
• Abnormal noise at idle
• Noise that changes with engine speed
• Rough or irregular engine operation
• Difficult startingUnstable idle
  
• Reduced engine performance
• Engine warning light
• Timing-related diagnostic fault codes
• Crankshaft/camshaft correlation 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 filter

These symptoms can also be caused by other components, so accurate diagnosis is essential before replacement.

Why Replacement Matters:
The centre upper timing chain is an important internal engine component.

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

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

Ignoring confirmed timing-chain deterioration can allow wear to progress and potentially lead to a considerably more expensive engine repair.

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

958109465C

The product you are viewing cross references to these numbers

Timing chain, Left Upper.

Fits:
Porsche 970 Panamera 3.0L HYBRID 2011-16
Porsche 958 Cayenne 3.0L HYBRID 2010-18

Diagram ref no 31

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

958109465B

The product you are viewing cross references to these numbers

Timing Chain, Left Upper.
The IWIS Timing Chain, Left Upper is a replacement internal engine timing component for compatible Porsche applications. Positioned within the left upper section of the timing system, it forms part of the mechanical chain drive responsible for maintaining accurate synchronisation between associated engine timing components.

Fits:

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 31

The timing chain operates continuously whenever the engine is running. Although manufactured for long service life, gradual wear can develop in the chain links, pins and contact surfaces, as well as in associated guides, tensioners and sprockets.

Excessive wear or chain elongation can create additional slack, abnormal mechanical noise and inaccurate timing. If deterioration progresses far enough for the chain to jump, derail or fail, significant internal engine damage may result.

What This Product Does:
The left upper timing chain forms part of the engine's mechanical timing drive.

Its role is to transfer rotational movement between associated timing components while maintaining their required mechanical relationship.

This helps support:

• Accurate operation of the engine timing system
• Correct synchronisation of associated components
• Reliable transfer of rotational drive
• Accurate camshaft drive where applicable
• Correct valve timingSmooth engine operation
  
• Stable combustionConsistent engine performance

Correct chain tension and accurate engagement with the associated sprockets are essential for dependable engine timing.

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

• Metallic rattling from the timing area
• Clattering or chain noise
• Rattle during cold starts
• Excessive chain slack
• Timing-chain elongation
• Mechanical noise at idle
• Noise that changes with engine speed
• 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
• Misfires or irregular combustion
• Visible chain wear during inspection
• Worn or damaged chain guides
• Abnormal sprocket wear
• Metal or plastic debris in the engine oil or filter

These symptoms can also be caused by other timing components, so the system should be correctly diagnosed before individual parts are replaced.

Why Replacement Matters:
The left upper timing chain is a critical part of the engine's mechanical timing system.

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

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

Once excessive chain wear has been confirmed, continued operation can allow deterioration to progress and increase the possibility of a substantially more expensive engine repair.

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

958109465B

The product you are viewing cross references to these numbers

Timing chain, Right upper.

Fits:
Porsche 970 Panamera 3.0L HYBRID 2011-16
Porsche 958 Cayenne 3.0L HYBRID 2010-18

Diagram ref no 34

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

958109465D

The product you are viewing cross references to these numbers

Timing Chain, Right Upper.
The IWIS Timing Chain, Right Upper is a replacement internal engine timing component for compatible Porsche applications. Positioned within the right upper section of the engine timing system, it forms part of the mechanical chain drive responsible for maintaining accurate synchronisation between associated engine timing components.

Fits:

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 34

The timing chain operates continuously whenever the engine is running. Although manufactured for long service life, gradual wear can develop at the chain links, pins and contact surfaces, as well as in associated guides, tensioners and sprockets.

A worn, elongated or damaged timing chain can develop excessive slack, create abnormal mechanical noise and affect timing accuracy. If deterioration becomes severe enough for the chain to jump, derail or fail, significant internal engine damage may result.

What This Product Does:
The right upper timing chain forms part of the engine's mechanical timing drive.

Its role is to transfer rotational movement between associated timing components while maintaining their required mechanical relationship.

This helps support:

• Accurate engine timing
• Correct synchronisation of associated components
• Reliable transfer of rotational drive
• Accurate camshaft drive where applicable
• Correct valve timingSmooth engine operation
  
• Stable combustionConsistent engine performance

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

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

• Metallic rattling from the timing area
• Clattering or chain noise
• Rattle during cold starts
• Excessive chain slack
• Timing-chain elongation
• Mechanical noise at idle
• Noise that changes with engine speed
• Rough or irregular engine operation
• Unstable idleDifficult starting
  
• Reduced engine performance
• Engine warning light
• Timing-related diagnostic fault codes
• Crankshaft/camshaft correlation faults where applicable
• Misfires or irregular combustion
• 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 can also be produced by other timing-system or internal engine faults, so accurate diagnosis is important before replacing individual components.

Why Replacement Matters:
The right upper timing chain is an important part of the engine's mechanical timing system.

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

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

Continued operation with a confirmed timing-chain problem can allow deterioration to progress and increase the risk of a considerably more expensive engine repair.

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

958109465D

The product you are viewing cross references to these numbers

Timing chain.



Fits:
Porsche 957 Cayenne S / GTS / Turbo 4.8L 2007-10
Porsche 958 Cayenne S / GTS / Turbo 4.8L 2010-18
Porsche 970 Panamera 3.6L 2010-16
Porsche 970 Panamera 4.8L 2009-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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

94810516910

The product you are viewing cross references to these numbers

Timing Chain.
The OE Match Timing Chain is a premium-quality replacement engine timing component designed to synchronise the rotation of the crankshaft and camshaft(s) on compatible Porsche engines. Manufactured to OE specifications for fit, strength and durability, this precision-engineered timing chain ensures accurate valve timing, allowing the engine to operate efficiently while delivering optimum performance, fuel economy and reliability.

Fits:

• Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
• Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
• Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
• Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18  

Diagram Ref No 1

Manufactured from high-strength heat-treated alloy steel with precision-machined chain links and hardened pins, the timing chain is engineered to withstand constant high-speed operation, heavy engine loads and continuous thermal cycling. Designed for direct OE-style installation, it works seamlessly with the original timing chain guides, sprockets and tensioners, making it the ideal replacement during engine rebuilds, timing system repairs or preventative maintenance.  

What This Product Does:

• Synchronises the crankshaft and camshaft(s).
• Maintains accurate engine valve timing.
• Ensures correct opening and closing of the engine valves.
• Supports smooth engine operation and performance.
• Helps maximise fuel efficiency and emissions performance.
• Works with the timing chain tensioner and guide rails.
• Restores factory timing system performance.
• Forms an essential part of the engine timing system.

Symptoms Of Wear Or Failure:

• Rattling noise from the front of the engine, particularly during start-up.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or poor engine performance.
• Loss of engine power or hesitation.
• Engine misfires.
• Difficulty starting the engine.
• Excessive timing chain stretch.
• Incorrect valve timing.
• Severe engine damage if the chain slips or fails.

Why Replacement Matters:

• The timing chain operates continuously whenever the engine is running and is subjected to high loads, rapid acceleration, constant lubrication and repeated heat cycles. Over time, the chain can stretch through normal wear, while the links and pins gradually lose their original precision. This can affect valve timing and increase stress on the timing chain guides and tensioners.
• A worn timing chain can lead to poor engine performance, increased emissions, rough running and timing-related warning lights. In severe cases, excessive chain stretch or failure can allow the engine timing to slip, potentially resulting in contact between the pistons and valves and causing extensive internal engine damage.
• Replacing a worn timing chain restores precise valve timing, reliable engine performance and long-term durability. The OE Match replacement is manufactured to OE standards using premium heat-treated materials to provide factory-style fitment, exceptional strength and dependable performance, helping to protect your Porsche engine for many miles to come.

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

958109229D

The product you are viewing cross references to these numbers

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, transmitting rotational movement between associated timing components and helping maintain the precise synchronisation required for reliable engine operation.
 
Fits:

• Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
• Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
• Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
• Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18  

Diagram Ref No 1

Timing chains operate continuously whenever the engine is running. Although engineered for durability and long service life, gradual wear can occur at the chain links, pins and contact surfaces. Wear may also develop in associated guides, tensioners and sprockets.

A worn, elongated or damaged timing chain can develop excessive slack, create abnormal mechanical noise and affect timing accuracy. If deterioration becomes severe enough for the chain to jump or fail, significant internal engine damage may result.

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

Within the timing system, precise synchronisation is essential to ensure that internal engine components operate at the correct point in the combustion cycle.

The timing chain helps support:

• Accurate engine timing
• Reliable mechanical synchronisation
• Correct operation of associated timing components
• Consistent engine performance
• Smooth engine operation
• Stable combustion
• Reliable operation throughout the engine-speed range

The chain must remain correctly tensioned and properly engaged with its sprockets to maintain accurate timing.

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

• Metallic rattling from the timing-chain area
• Clattering or chain noise
• Rattle during cold start
• Excessive chain slack
• Timing-chain elongation
• Abnormal noise at idle
• Noise that changes with engine speed
• Rough or irregular engine operation
• Unstable idleDifficult starting
  
• Reduced engine performance
• Engine warning light
• Timing-related diagnostic fault codes
• Crankshaft/camshaft correlation faults where applicable
• Misfires or irregular combustion
• Visible chain wear during inspection
• Worn or damaged chain guides
• Abnormal sprocket wear
• Metal or plastic debris in the engine oil or filter

These symptoms do not automatically mean the chain itself has failed. Similar problems can result from worn guides, defective tensioners, damaged sprockets, camshaft-control components or lubrication issues.

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

Once excessive timing-chain wear has been confirmed, continued operation can increase the possibility of more serious and expensive engine damage.

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

958109229D

The product you are viewing cross references to these numbers

Timing chain.

Fits:
Porsche 958 Cayenne 3.0L DIESEL 2011-18
Porsche 95B Macan 3.0L V6 TDI 2014-18
Porsche 970 Panamera 3.0L DIESEL 2012-16

Diagram ref no 1

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

958109229D

The product you are viewing cross references to these numbers