Chains & Tensioners

Engine timing chain tensioner, upper.

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

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Diagram ref no 29 (LEFT) or 33 (RIGHT)

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PAC10921

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Engine timing chain tensioner.

Fits:
Porsche 958 Cayenne 3.0L Hybrid 2011-18
Porsche 970 Panamera 3.0L Hybrid 2013-16

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Diagram ref no 26

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95810550710

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Engine Timing Chain Tensioner. 

The OE MATCH Engine Timing Chain Tensioner is an OE-matching Porsche engine timing system component designed to maintain the correct tension on the engine timing chain. By applying controlled pressure to the timing chain guides, the tensioner ensures accurate synchronisation between the crankshaft and camshaft, which is essential for proper valve timing and engine performance.

Fits:

• Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 970.1 Panamera S Hybrid V6 3.0L 2013
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 26

What This Product Does:

• Maintains correct tension on the engine timing chain
• Ensures accurate camshaft and crankshaft synchronisation
• Prevents timing chain slack and vibration
• Supports smooth engine operation and valve timing
• Helps reduce timing chain noise and wear
• Maintains reliable engine performance and efficiency

Symptoms Of Wear Or Failure:

• Rattling noise from the engine, especially during cold starts
• Engine timing irregularities or misfires
• Check engine light related to timing faults
• Poor engine performance or rough running
• Excessive timing chain slack or vibration
• Difficulty starting the engine
• Potential timing chain jump or engine damage in severe cases  

Why Replacement Matters:

• Restores proper timing chain tension and alignment
• Maintains accurate valve timing and engine performance
• Reduces timing chain noise and vibration
• Prevents premature wear of timing chain components and guides
• Helps avoid serious engine damage caused by timing chain failure
• Supports long-term engine reliability and smooth operation
• Ensures dependable OE-level timing system performance

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95810550710

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Engine timing chain tensioner.

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

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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PAC109507

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Bolt for Timing chain guide rail, M7 x 36.
sold each.

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

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Diagram ref no 12

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N91129001

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Timing chain centre lower.

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

Diagram ref no 28

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958109465A

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Timing Chain Centre Lower.
The IWIS Timing Chain Centre Lower is a replacement internal engine timing component for compatible Porsche applications. Positioned within the centre lower section of the engine timing system, this 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 28

Timing chains operate continuously whenever the engine is running and are exposed to repeated mechanical loads, high temperatures and constant movement. Although engineered for long service life, gradual wear can occur within the chain and its associated guides, tensioners and sprockets.

A worn, elongated or damaged centre lower timing chain can develop excessive slack, create abnormal mechanical noise and affect timing-system operation. Severe deterioration can increase the risk of the chain jumping, derailing or failing, potentially resulting in significant internal engine damage.

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

Its purpose is to transmit rotational movement between associated timing-system components while maintaining the required relationship between them.

The chain helps support:

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

Correct chain tension, lubrication and sprocket engagement are essential for dependable operation.

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-related mechanical noise
• Rattle during cold start
• Excessive chain slack
• Timing-chain elongation
• 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
• Visible chain wear during inspection
• Worn or broken chain guides
• Abnormal sprocket wear
• Metal or plastic debris in the engine oil or filter

These symptoms can also result from other timing-system or internal engine components, so correct diagnosis is important.

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

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

• Restore reliable timing-system operation
• Maintain accurate mechanical synchronisation
• Reduce excessive chain slack
• Reduce abnormal timing-chain noise
• Restore dependable sprocket engagement
• 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 significantly increase repair costs.

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958109465A

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Timing chain guide rail.

Fits:
Porsche 958 Cayenne 3.0L Hybrid 2011-18
Porsche 970 Panamera 3.0L Hybrid 2013-16

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Diagram ref no 11

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95810546900

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Timing chain guide rail.

Fits:
Porsche 958 Cayenne 3.0L Hybrid 2011-18
Porsche 970 Panamera 3.0L Hybrid 2013-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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95810551400

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Timing Chain Kit. 

The OE MATCH Timing Chain Kit is a replacement engine timing system solution intended for Porsche Cayenne 958 and Panamera 970 models equipped with the 3.0L V6 Hybrid petrol engine, subject to confirmation of the kit's exact components and vehicle compatibility.

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  

Kit Includes:

• 1 x Chain Top Left
• 1 x Chain Top Right
• 1 x Chain Center
• 1 x Chain Lower
• 1 x Tensioner Top Left
• 1 x Tensioner Top Right
• 1 x Tensioner Center
• 1 x Tensioner Lower
• 1 x Guide Rail Center Top
• 1 x Guide Rail Center Left
• 2 x Guide Rail Left & Right

Designed to restore the correct operation of the engine's timing system, the kit provides a solution for replacing worn or deteriorated timing drive components during engine repairs, preventative maintenance or major engine overhauls.

The timing chain system is responsible for maintaining precise synchronisation between the crankshaft and camshafts, ensuring that the engine's intake and exhaust valves operate at the correct points in the combustion cycle.

Timing components operate continuously while the engine is running and are exposed to repeated mechanical loading, engine heat and vibration. Over time, timing chains can develop wear and elongation, while associated tensioners and guide rails may deteriorate.

A properly specified replacement timing chain kit helps restore accurate engine timing, reduce excessive chain movement and maintain smooth, reliable engine operation.

Ideal for Porsche owners undertaking timing system repairs or comprehensive engine maintenance, this kit offers a practical solution for addressing deterioration within the engine's timing drive assembly.

What This Product Does:
The timing chain kit supports the mechanical synchronisation of the engine's crankshaft and camshafts, ensuring that the valves open and close at the correct times in relation to piston movement.

Its key functions include:

• Engine Timing Synchronisation: Maintains the correct mechanical relationship between the crankshaft and camshafts.
• Accurate Valve Timing: Helps ensure the intake and exhaust valves operate at the intended points in the engine cycle.
• Timing Chain Tension: Associated tensioners maintain appropriate chain tension and reduce excessive slack.
• Timing Chain Guidance: Guide rails support correct chain routing and help control unwanted movement.
• Smooth Engine Operation: Accurate timing contributes to stable idling, consistent combustion and predictable engine performance.
• Reduced Timing System Noise: Properly functioning chains, guides and tensioners help minimise excessive rattling and vibration.
• Engine Performance Support: Correct valve timing contributes to efficient combustion, power delivery and engine responsiveness.
• Component Protection: Maintaining correct chain alignment and tension helps reduce unnecessary wear on associated timing components.
• Long-Term Reliability: Renewing worn timing components helps reduce the risk of unexpected timing system failure.

Symptoms Of Wear Or Failure:
Over time, timing chains, tensioners, guide rails and associated components can deteriorate through normal use, insufficient lubrication, mechanical fatigue or ageing.

Common signs include:

• Rattling Noise During Cold Starts: A metallic rattling sound when starting the engine may indicate excessive chain slack, tensioner problems or guide wear.
• Persistent Timing Chain Noise: Rattling, slapping or grinding noises from the timing drive area may indicate worn or damaged components.
• Rough Engine Idling: Incorrect valve timing may contribute to uneven engine operation or unstable idling.
• Engine Misfires: Timing irregularities can affect combustion and contribute to misfiring.
• Reduced Engine Performance: An elongated or incorrectly tensioned timing chain may affect valve timing and reduce engine responsiveness.
• Engine Management Warning Light: Timing-related faults may trigger the check engine light and store diagnostic trouble codes.
• Camshaft and Crankshaft Correlation Faults: Diagnostic codes indicating incorrect synchronisation may suggest problems within the timing drive system.
• Difficulty Starting: Significant timing irregularities can contribute to extended cranking or starting difficulties.
• Excessive Timing Chain Slack: A worn chain or failing tensioner may allow abnormal movement within the timing drive assembly.
• Damaged Timing Chain Guides: Cracked, broken or worn guide rails can affect chain positioning and increase mechanical noise.
• Deteriorated Tensioner Operation: A faulty hydraulic or mechanical tensioner may no longer maintain the correct chain tension.
• Plastic Debris in Engine Oil: Fragments from deteriorating chain guides may appear in the oil or filter.
• Engine Timing Failure: Severe deterioration may cause the timing chain to jump teeth or fail, potentially resulting in serious internal engine damage.

Why Replacement Matters:

• Replacing worn or damaged timing chain components is essential for maintaining accurate engine operation and protecting the long-term reliability of your Porsche's 3.0L V6 Hybrid engine.
• The timing chain system plays a critical role in coordinating crankshaft and camshaft movement. Even relatively small timing deviations can affect valve operation, combustion efficiency and overall engine performance.
• As timing chains wear, elongation can develop within the chain assembly. This may lead to excessive movement, abnormal noise and increased stress on the tensioners and guide rails.
• If a chain tensioner becomes weak or a guide rail deteriorates, the timing chain may no longer remain correctly positioned. Continued operation under these conditions can increase the risk of the chain skipping or jumping teeth.
• A timing chain failure can have serious consequences. If the crankshaft and camshafts lose synchronisation, internal engine components may be damaged, potentially resulting in expensive repairs.
• Replacing deteriorated timing components helps restore correct mechanical synchronisation, appropriate chain tension and reliable valve timing.
• Where inspection identifies wear across multiple components, replacing the affected chains, tensioners and guide rails together can be more practical than carrying out repeated repairs to individual components.
• For Porsche Cayenne and Panamera Hybrid owners, maintaining the timing system is especially important as part of responsible engine servicing and long-term vehicle preservation.
• A correctly specified OE MATCH Timing Chain Kit can provide an effective replacement solution, helping restore engine timing accuracy, reduce abnormal mechanical noise and minimise the risk of major timing-related engine damage.

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958109465C

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Timing chain sprocket. 
sold each.

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

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Diagram ref no 4

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95810507701

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Timing chain tensioner gasket.

Fits:
Porsche 95B.2 Macan 2.0L / 3.0L 2018>>
Porsche 958 Cayenne 3.0L / 3.0L Hybrid 2010-18
Porsche 9YA Cayenne 2.9L / 3.0L / 4.0L 2017>>
Porsche 970 Panamera 3.0L Hybrid 2011-16
Porsche 971 Panamera 2.9L / 3.0L 2016-20
Porsche 971 Panamera 4.0L 2016-20

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Diagram ref no 14

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95810513900

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Timing chain tensioner gasket.

Fits:
Porsche 95B.2 Macan 2.0L / 3.0L 2018>>
Porsche 958 Cayenne 3.0L / 3.0L Hybrid 2010-18
Porsche 9YA Cayenne 2.9L / 3.0L / 4.0L 2017>>
Porsche 970 Panamera 3.0L Hybrid 2011-16
Porsche 971 Panamera 2.9L / 3.0L 2016-20
Porsche 971 Panamera 4.0L 2016-20

Click 'Zoom in' for large parts diagram.
Diagram ref no 14

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95810513900

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Timing chain, Centre upper.

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

Diagram ref no 1

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958109465C

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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.

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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

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958109465B

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