Chains & Tensioners

Chain Tensioner.
The Genuine Porsche Chain Tensioner is an original equipment engine timing component designed to maintain the correct tension on the engine timing chain of compatible Porsche models. Manufactured to Porsche's exact specifications for fit, performance and durability, this precision-engineered chain tensioner ensures accurate valve timing by keeping the timing chain under constant, controlled tension, reducing chain vibration and preventing premature wear of the timing system.  

Fits:

• Porsche 955 Cayenne 3.2L V6 2004-06
• Porsche 957 Cayenne 3.6L 2007-10  

Diagram Ref No 2

Manufactured from high-strength steel with precision-machined internal hydraulic components and durable sealing elements, the chain tensioner is engineered to withstand continuous engine oil pressure, elevated operating temperatures and high engine speeds. Designed as a direct replacement for the original component, it integrates seamlessly with the timing chain assembly to deliver factory-correct timing performance and long-term reliability.  

What This Product Does:

• Maintains the correct tension on the engine timing chain.
• Prevents timing chain slack and excessive movement.
• Ensures accurate camshaft and crankshaft timing.
• Reduces timing chain vibration and noise.
• Helps prevent premature wear of the timing chain and guide rails.
• Supports smooth and efficient engine operation.
• Restores factory timing chain performance.
• Forms an essential part of the engine timing system.

Symptoms Of Wear Or Failure:

• Rattling noise from the timing chain area, particularly during cold starts.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or engine misfires.
• Reduced engine performance.
• Excessive timing chain noise.
• Poor engine starting.
• Engine timing becoming inaccurate.
• Accelerated wear of the timing chain or guide rails.
• Severe engine damage if the timing chain jumps teeth.

Why Replacement Matters:

• The chain tensioner operates continuously using engine oil pressure and an internal spring mechanism to maintain the correct tension on the timing chain. Over time, internal wear, weakened springs or seal deterioration can reduce its effectiveness, allowing excessive chain slack and movement.
• A faulty chain tensioner can lead to inaccurate valve timing, increased timing chain wear and excessive engine noise. In severe cases, insufficient chain tension can allow the timing chain to skip teeth, potentially resulting in valve-to-piston contact and catastrophic engine damage.
• Replacing a worn or faulty chain tensioner with a Genuine Porsche component restores precise timing chain control and protects the entire timing system from unnecessary wear. Manufactured to Porsche's exact engineering standards, the Genuine Porsche Chain Tensioner provides factory-correct fitment, exceptional durability and dependable long-term performance, ensuring the reliability, efficiency and engine protection expected from your Porsche.

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

95510546700

The product you are viewing cross references to these numbers

Chain Tensioner.
The OE MATCH Chain Tensioner is a engine timing component designed to maintain the correct tension on the engine timing chain of compatible Porsche models. This precision-engineered chain tensioner ensures accurate valve timing by keeping the timing chain under constant, controlled tension, reducing chain vibration and preventing premature wear of the timing system.  

Fits:

• Porsche 955 Cayenne 3.2L V6 2004-06
• Porsche 957 Cayenne 3.6L 2007-10  

Diagram Ref No 2

The chain tensioner is engineered to withstand continuous engine oil pressure, elevated operating temperatures and high engine speeds. Designed as a replacement, it integrates seamlessly with the timing chain assembly to deliver correct timing performance and long-term reliability.  

What This Product Does:

• Maintains the correct tension on the engine timing chain.
• Prevents timing chain slack and excessive movement.
• Ensures accurate camshaft and crankshaft timing.
• Reduces timing chain vibration and noise.
• Helps prevent premature wear of the timing chain and guide rails.
• Supports smooth and efficient engine operation.
• Forms an essential part of the engine timing system.

Symptoms Of Wear Or Failure:

• Rattling noise from the timing chain area, particularly during cold starts.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or engine misfires.
• Reduced engine performance.
• Excessive timing chain noise.
• Poor engine starting.
• Engine timing becoming inaccurate.
• Accelerated wear of the timing chain or guide rails.
• Severe engine damage if the timing chain jumps teeth.

Why Replacement Matters:

• The chain tensioner operates continuously using engine oil pressure and an internal spring mechanism to maintain the correct tension on the timing chain. Over time, internal wear, weakened springs or seal deterioration can reduce its effectiveness, allowing excessive chain slack and movement.
• A faulty chain tensioner can lead to inaccurate valve timing, increased timing chain wear and excessive engine noise. In severe cases, insufficient chain tension can allow the timing chain to skip teeth, potentially resulting in valve-to-piston contact and catastrophic engine damage.

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

95510546700

The product you are viewing cross references to these numbers

Timing Chain Guide Rail.
The Genuine Porsche Timing Chain Guide Rail is an original equipment engine timing component designed to guide and support the timing chain on compatible Porsche engines. Manufactured to Porsche's exact specifications for fit, strength and durability, this precision-engineered guide rail maintains the correct timing chain path while working alongside the timing chain tensioner to minimise chain movement, reduce vibration and ensure precise valve timing throughout the engine's operating range.  

Fits:

• Porsche 955 Cayenne 3.2L V6 2003-06
• Porsche 957 Cayenne 3.6L 2007-10
• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17 

 
Diagram Ref No 19

Manufactured from high-strength engineering-grade composite material with a reinforced metal backing where applicable, the guide rail is engineered to withstand continuous contact with the timing chain, constant engine oil lubrication, elevated operating temperatures and repeated thermal cycling. Precision-manufactured to OE dimensions, it provides direct replacement fitment and dependable long-term performance, making it ideal during timing chain replacement, engine overhauls or preventative maintenance.  

What This Product Does:

• Guides the timing chain along its correct operating path.
• Maintains accurate timing chain alignment.
• Works with the chain tensioner to control chain movement.
• Reduces timing chain vibration and operating noise.
• Minimises wear on the timing chain and sprockets.
• Supports precise camshaft and crankshaft timing.
• Restores factory timing system performance.
• Forms an essential part of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Rattling or ticking noises from the timing chain area, particularly during cold starts.
• Increased timing chain noise while driving.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or reduced engine performance.
• Visible wear grooves, cracks or missing material on the guide rail.
• Excessive timing chain slack.
• Accelerated wear of the timing chain or tensioner.
• Plastic guide fragments found in the engine oil or oil sump.
• Severe engine damage if the timing chain loses correct alignment or jumps timing.

Why Replacement Matters:

• The timing chain guide rail is subjected to continuous friction from the timing chain while operating under high engine speeds, hot engine oil and repeated heat cycles. Over time, the guide surface naturally wears, and the composite material can become brittle, crack or break, reducing its ability to correctly support the timing chain.
• A worn or damaged guide rail can allow excessive timing chain movement, increasing engine noise and accelerating wear of the chain, sprockets and tensioner. If left unresolved, severe guide wear may allow the timing chain to skip teeth, resulting in incorrect valve timing and potentially catastrophic internal engine damage.
• Replacing a worn or damaged guide rail with a Genuine Porsche component restores proper timing chain guidance and protects the complete timing system from unnecessary wear. Manufactured to Porsche's exact engineering standards, the Genuine Porsche Timing Chain Guide Rail provides factory-correct fitment, exceptional durability and dependable long-term reliability, helping maintain smooth engine operation, accurate valve timing and the performance expected from your Porsche.

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

95510551400

The product you are viewing cross references to these numbers

Timing Chain Guide Rail.
The OE MATCH Timing Chain Guide Rail is a engine timing component designed to guide and support the timing chain on compatible Porsche engines. This precision-engineered guide rail maintains the correct timing chain path while working alongside the timing chain tensioner to minimise chain movement, reduce vibration and ensure precise valve timing throughout the engine's operating range.  

Fits:

• Porsche 955 Cayenne 3.2L V6 2003-06
• Porsche 957 Cayenne 3.6L 2007-10
• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17 

 
Diagram Ref No 19

The guide rail is engineered to withstand continuous contact with the timing chain, constant engine oil lubrication, elevated operating temperatures and repeated thermal cycling. Precision to OE dimensions, it provides replacement fitment and dependable long-term performance, making it ideal during timing chain replacement, engine overhauls or preventative maintenance.  

What This Product Does:

• Guides the timing chain along its correct operating path.
• Maintains accurate timing chain alignment.
• Works with the chain tensioner to control chain movement.
• Reduces timing chain vibration and operating noise.
• Minimises wear on the timing chain and sprockets.
• Supports precise camshaft and crankshaft timing.
• Forms an essential part of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Rattling or ticking noises from the timing chain area, particularly during cold starts.
• Increased timing chain noise while driving.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or reduced engine performance.
• Visible wear grooves, cracks or missing material on the guide rail.
• Excessive timing chain slack.
• Accelerated wear of the timing chain or tensioner.
• Plastic guide fragments found in the engine oil or oil sump.
• Severe engine damage if the timing chain loses correct alignment or jumps timing.

Why Replacement Matters:

• The timing chain guide rail is subjected to continuous friction from the timing chain while operating under high engine speeds, hot engine oil and repeated heat cycles. Over time, the guide surface naturally wears, and the composite material can become brittle, crack or break, reducing its ability to correctly support the timing chain.
• A worn or damaged guide rail can allow excessive timing chain movement, increasing engine noise and accelerating wear of the chain, sprockets and tensioner. If left unresolved, severe guide wear may allow the timing chain to skip teeth, resulting in incorrect valve timing and potentially catastrophic internal engine damage.

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

95510551400

The product you are viewing cross references to these numbers

OE Match timing chain guide rail.

Fits

• Porsche 955 Cayenne 3.2L 2004-06
  
• Porsche 957 Cayenne 3.6L 2008-10
  
• Porsche 958 Cayenne 3.6L 2011-18
  
  Check fitment for your specific vehicle (model, year, engine) before ordering.
  
  

Diagram ref no: 4

What This Product Does

The rail provides a guiding surface for the timing chain as it travels through the valve-control assembly. It works alongside the chain and tensioning components; it is not itself a chain tensioner.

Functions

• Supports the intended chain running path.
• Guides chain movement within the timing assembly.
• Replaces the corresponding worn or damaged rail during timing-system repairs.
  
  

Technical Details

• Component reference: 95510546900.
• Identified as a guide rail or slide rail in the supplied diagrams.
  
  

Symptoms of Fault

• Chain rattling that becomes more frequent or lasts longer after starting.
• Continued noise from the timing assembly.
• Guide fragments discovered during servicing or dismantling.
• Uneven running or timing-related faults requiring further diagnosis.
  
  

These signs can involve other timing components and do not establish that this rail is faulty.

Why Replacement Matters

A worn or fractured guide should be assessed during timing-system inspection. When access is available, checking the chains, tensioners, adjoining guides and fixings helps establish the full repair requirements rather than replacing one component without investigating related wear.

FAQs

Does a brief rattle mean the guide has failed?
No. Investigate the source, particularly if the sound increases in duration or frequency.

Should other timing parts be inspected?
Yes. Assess chain condition, tensioner operation and the remaining guides before deciding which components require renewal.

Check fitment for your specific vehicle (model, year, engine) before ordering.

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

95510546900

The product you are viewing cross references to these numbers

Timing Chain Guide Rail.
The Genuine Porsche Timing Chain Guide Rail is an original equipment engine timing component designed to accurately guide and support the timing chain on compatible Porsche engines. Manufactured to Porsche's exact specifications for fit, strength and durability, this precision-engineered guide rail ensures the timing chain follows its correct path while working in conjunction with the timing chain tensioner to minimise chain movement, reduce vibration and maintain precise valve timing.  

Fits:

Diagram Ref No 14

Manufactured from high-strength engineering-grade composite material with a reinforced metal backing where applicable, the guide rail is designed to withstand continuous contact with the timing chain, constant engine oil lubrication, elevated operating temperatures and repeated thermal cycling. Precision-manufactured to OE dimensions, it provides direct replacement fitment and dependable long-term performance, making it the ideal replacement during timing chain servicing, engine repairs or complete engine rebuilds.  

What This Product Does:

• Guides the timing chain along its correct operating path.
• Maintains precise timing chain alignment.
• Works with the timing chain tensioner to control chain movement.
• Reduces timing chain vibration and operating noise.
• Minimises wear on the timing chain, sprockets and tensioner.
• Supports accurate camshaft and crankshaft timing.
• Restores factory timing system operation.
• Forms an essential part of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Rattling or ticking noises from the timing chain area, particularly during cold starts.
• Increased timing chain noise while driving.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or reduced engine performance.
• Visible wear grooves, cracks or broken sections on the guide rail.
• Excessive timing chain slack.
• Accelerated wear of the timing chain and tensioner.
• Plastic guide fragments found in the engine oil or oil sump.
• Severe engine damage if the timing chain loses alignment or jumps timing.

Why Replacement Matters:

• The timing chain guide rail operates under constant load as it guides the timing chain throughout every engine revolution. Continuous friction, engine heat, oil exposure and repeated thermal cycling gradually wear the guide surface, while age can cause the composite material to become brittle and crack.
• A worn or damaged guide rail can allow excessive timing chain movement, resulting in increased engine noise, accelerated wear of the timing chain and inaccurate valve timing. If left unresolved, guide rail failure may allow the timing chain to skip teeth, potentially causing catastrophic internal engine damage.
• Replacing a worn or damaged guide rail with a Genuine Porsche component restores precise timing chain guidance and protects the complete timing system from unnecessary wear. Manufactured to Porsche's exact engineering standards, the Genuine Porsche Timing Chain Guide Rail provides factory-correct fitment, exceptional durability and dependable long-term reliability, helping maintain smooth engine operation, accurate valve timing and the performance expected from your Porsche.

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

95510551300

The product you are viewing cross references to these numbers

Timing Chain Guide Rail.
The OE MATCH Porsche Timing Chain Guide Rail is a engine timing component designed to accurately guide and support the timing chain on compatible Porsche engines. This precision-engineered guide rail ensures the timing chain follows its correct path while working in conjunction with the timing chain tensioner to minimise chain movement, reduce vibration and maintain precise valve timing.  

Fits:

Diagram Ref No 14

The guide rail is designed to withstand continuous contact with the timing chain, constant engine oil lubrication, elevated operating temperatures and repeated thermal cycling. Precision to OE dimensions, it provides replacement fitment and dependable long-term performance, making it the ideal replacement during timing chain servicing, engine repairs or complete engine rebuilds.  

What This Product Does:

• Guides the timing chain along its correct operating path.
• Maintains precise timing chain alignment.
• Works with the timing chain tensioner to control chain movement.
• Reduces timing chain vibration and operating noise.
• Minimises wear on the timing chain, sprockets and tensioner.
• Supports accurate camshaft and crankshaft timing.
• Forms an essential part of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Rattling or ticking noises from the timing chain area, particularly during cold starts.
• Increased timing chain noise while driving.
• Engine management or check engine warning light.
• Timing-related fault codes.
• Rough idle or reduced engine performance.
• Visible wear grooves, cracks or broken sections on the guide rail.
• Excessive timing chain slack.
• Accelerated wear of the timing chain and tensioner.
• Plastic guide fragments found in the engine oil or oil sump.
• Severe engine damage if the timing chain loses alignment or jumps timing.

Why Replacement Matters:

• The timing chain guide rail operates under constant load as it guides the timing chain throughout every engine revolution. Continuous friction, engine heat, oil exposure and repeated thermal cycling gradually wear the guide surface, while age can cause the composite material to become brittle and crack.
• A worn or damaged guide rail can allow excessive timing chain movement, resulting in increased engine noise, accelerated wear of the timing chain and inaccurate valve timing. If left unresolved, guide rail failure may allow the timing chain to skip teeth, potentially causing catastrophic internal engine damage.

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

95510551300

The product you are viewing cross references to these numbers

Timing chain guide rail

Fits:
Porsche 955 Cayenne 3.2L 2004-06
Porsche 957 Cayenne 3.6L 2008-10
Porsche 958 Cayenne 3.6L 2011-18

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

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95510546900

The product you are viewing cross references to these numbers

Timing Chain Kit for camshaft, with guide rails and chain tensioner. (10 pcs kit)

Fits:
Porsche 955 Cayenne 3.2L 2004-06 Engine M02.2Y

Contains
1x 95510546501 Timing chain
1x 95510516900 Timing chain
1x 95810546700 Chain tensioner
1x 95510550702 Chain tensioner
1x 95510546900 Guide rail
1x 95510551300 Guide rail
1x 95510551400 Slide rail
1x 95510556900 Chain sprocket
1x 95510550900 Tensioner blade
1x 95510557001 Chain sprocket

Click 'Zoom in' for large parts diagram.
Diagram ref no 9, 18, 4, 1, 2, 6, 13, 11, 14, 7,

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

95510516900

The product you are viewing cross references to these numbers

Timing Chain Kit for camshaft, with guide rails and chain tensioner.

Fits:
Porsche 955 Cayenne 3.2L 2004-06
Porsche 957 Cayenne 3.6L 2008-10

Contains
1x 95510546501
1x 95510516900
1x 95810546700
1x 95510550702
1x 95510546900
1x 95510506501
1x 95510551300
1x 95510551400

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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

95510516900

The product you are viewing cross references to these numbers

Timing chain tensioner for camshaft.

Fits:
Porsche 955 Cayenne 3.2L 2004-06
Porsche 957 Cayenne 3.6L 2008-10
Porsche 958 Cayenne 3.6L 2011-18

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

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95510550702

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Timing Chain Tensioner Blade.
The Genuine Porsche Timing Chain Tensioner Blade is an original equipment engine timing component designed to provide a durable contact surface for the timing chain tensioner on compatible Porsche engines. Manufactured to Porsche's exact specifications for fit, strength and wear resistance, this precision-engineered tensioner blade works in conjunction with the hydraulic chain tensioner to maintain correct timing chain tension, ensuring accurate valve timing, reduced chain vibration and reliable engine operation.  

Fits:

Diagram Ref No 13

Manufactured from high-strength, wear-resistant engineering-grade composite material with a reinforced metal backing where applicable, the tensioner blade is engineered to withstand constant contact with the timing chain, hot engine oil, elevated operating temperatures and repeated thermal cycling. Precision-manufactured to OE dimensions, it provides direct replacement fitment and dependable long-term performance, making it the ideal replacement during timing chain servicing, engine overhauls or preventative maintenance.  

What This Product Does:

• Provides a wear-resistant contact surface for the timing chain tensioner.
• Maintains correct timing chain tension.
• Controls timing chain movement and vibration.
• Supports accurate camshaft and crankshaft timing.
• Reduces timing chain noise.
• Minimises wear on the timing chain and sprockets.
• Restores factory timing system performance.
• Forms an essential part of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Rattling or ticking noises from the timing chain area, especially during cold starts.
• Increased timing chain noise while driving.
• Excessive timing chain slack.
• Timing-related engine fault codes.
• Rough idle or reduced engine performance.
• Visible wear grooves or scoring on the blade surface.
• Cracked, broken or missing sections of the blade.
• Plastic fragments found in the engine oil or oil sump.
• Accelerated wear of the timing chain and tensioner.
• Severe engine damage if the timing chain loses tension or jumps timing.

Why Replacement Matters:

• The timing chain tensioner blade is subjected to continuous friction from the moving timing chain while operating under constant oil lubrication, engine vibration and high temperatures. Over time, the contact surface naturally wears, while the composite material can become brittle, crack or break due to age and repeated thermal cycling.
• A worn or damaged tensioner blade can reduce the effectiveness of the timing chain tensioner, allowing excessive chain movement, increased engine noise and accelerated wear of the timing system. In severe cases, the timing chain may skip teeth, resulting in incorrect valve timing and potentially catastrophic engine damage.
• Replacing a worn or damaged tensioner blade with a Genuine Porsche component restores proper timing chain control and protects the complete timing assembly. Manufactured to Porsche's exact engineering standards, the Genuine Porsche Timing Chain Tensioner Blade provides factory-correct fitment, exceptional wear resistance and dependable long-term reliability, helping maintain precise engine timing, smooth operation and the performance expected from your Porsche.

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

95510550900

The product you are viewing cross references to these numbers

Timing Chain Tensioner Blade.
The OE MATCH Timing Chain Tensioner Blade is a engine timing component designed to provide a durable contact surface for the timing chain tensioner on compatible Porsche engines. This precision tensioner blade works in conjunction with the hydraulic chain tensioner to maintain correct timing chain tension, ensuring accurate valve timing, reduced chain vibration and reliable engine operation.  

Fits:

Diagram Ref No 13

The tensioner blade is engineered to withstand constant contact with the timing chain, hot engine oil, elevated operating temperatures and repeated thermal cycling. Precision to OE dimensions, it provides replacement fitment and dependable long-term performance, making it the ideal replacement during timing chain servicing, engine overhauls or preventative maintenance.  

What This Product Does:

• Provides a wear-resistant contact surface for the timing chain tensioner.
• Maintains correct timing chain tension.
• Controls timing chain movement and vibration.
• Supports accurate camshaft and crankshaft timing.
• Reduces timing chain noise.
• Minimises wear on the timing chain and sprockets.
• Forms an essential part of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Rattling or ticking noises from the timing chain area, especially during cold starts.
• Increased timing chain noise while driving.
• Excessive timing chain slack.
• Timing-related engine fault codes.
• Rough idle or reduced engine performance.
• Visible wear grooves or scoring on the blade surface.
• Cracked, broken or missing sections of the blade.
• Plastic fragments found in the engine oil or oil sump.
• Accelerated wear of the timing chain and tensioner.
• Severe engine damage if the timing chain loses tension or jumps timing.

Why Replacement Matters:

• The timing chain tensioner blade is subjected to continuous friction from the moving timing chain while operating under constant oil lubrication, engine vibration and high temperatures. Over time, the contact surface naturally wears, while the composite material can become brittle, crack or break due to age and repeated thermal cycling.
• A worn or damaged tensioner blade can reduce the effectiveness of the timing chain tensioner, allowing excessive chain movement, increased engine noise and accelerated wear of the timing system. In severe cases, the timing chain may skip teeth, resulting in incorrect valve timing and potentially catastrophic engine damage.

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

95510550900

The product you are viewing cross references to these numbers

Timing chain tensioner for camshaft.

Fits:
Porsche 955 Cayenne 3.2L 2004-06
Porsche 957 Cayenne 3.6L 2008-10
Porsche 958 Cayenne 3.6L 2011-18

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

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

95510550702

The product you are viewing cross references to these numbers

OE Match camshaft timing chain for Porsche 955, 957 and 958 Cayenne 3.2L / 3.6L applications. This closed, simplex chain has 98 links and a G68V specification.

Fits

• Porsche 955 Cayenne 3.2L 2004-06
  
• Porsche 957 Cayenne 3.6L 2008-10
  
• Porsche 958 Cayenne 3.6L 2011-18
  
  

Check fitment for your specific vehicle (model, year, engine) before ordering.

Diagram ref no: 9

What This Product Does

The chain forms part of the engine’s valve-control drive, coordinating camshaft movement with crankshaft rotation. It works with the associated sprockets, guides and tensioners to maintain the relationship required for correctly timed valve operation.

Functions

• Transfers movement through the camshaft timing drive.
• Coordinates crankshaft rotation and camshaft movement.
• Supports the specified valve-opening and closing sequence.
  
  

Technical Details

• Part identification: PAB109503.
• Supplied reference: 95510516900.
• Construction: simplex with a closed-loop design.
• Chain specification: G68V.
• Link count: 98.
• Installation position: Front.
  
  

Symptoms of Fault

The following signs warrant inspection of the timing system; they do not establish that the chain alone is responsible.

• Increasingly prolonged rattling after a cold start.
• Continuing noise from the timing drive.
• Recorded timing-deviation faults or uneven engine operation.
• Guide fragments or metal particles discovered during servicing.
• Noise becoming more noticeable as temperature or engine load increases.
  
  

Why Replacement Matters

Chain wear or inadequate tension can disturb valve timing. Renewal may be appropriate after diagnosis confirms deterioration, or during an engine rebuild when inspection identifies worn timing components. Assess the guides, tensioners and sprockets together rather than assuming a new chain will resolve every source of noise. OE Match’s Porsche-focused component programme includes specification review and sample assessment.

FAQs

Does a start-up rattle prove the chain needs replacing?
No. A change in duration or frequency calls for investigation, including checks of the tensioners and related components.

Should the guides be inspected during replacement?
Yes. Guide deterioration can accompany chain wear, so assess the complete timing assembly before deciding which parts require renewal.

Can lubrication affect the timing system?
Yes. Oil condition and pressure influence hydraulic tensioner operation and should be considered during diagnosis.

Can timing-system faults be left unattended?
Incorrect timing can lead to serious internal damage. Investigate persistent noise or timing faults before continuing normal use.

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

PAB109503

The product you are viewing cross references to these numbers

Timing chain. 

Fits:
Porsche 955 Cayenne 3.2L 2004-06
Porsche 957 Cayenne 3.6L 2008-10
Porsche 958 Cayenne 3.6L 2011-18

Diagram Ref No 1

Related reference numbers
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PAB109465

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