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Chains & Tensioners

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DISPLAYING 33 to 48 (of 73 products)
<< 2 3 4 5
99610518059/1
Product Information
Product Information
Chain Tensioner Adjuster - up to 15/08/2000 
The Chain Tensioner Adjuster is a critical component in your engine’s timing system. Designed to maintain the correct tension on the timing chain, it ensures smooth, accurate synchronization between the crankshaft and camshafts for reliable performance.

Fits:
  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L >>August 15th, 2000 up to M96.22 65100500 with roller-type chain
  • Porsche Boxster S 986 3.2L  >>August 15th, 2000 up to M96.21 67100500 with roller-type chain
Cars With Engine Codes:
M96.20 / M96.21 / M96.22

  • Porsche 996 C2 3.4L 1997-08/01  >>August 15th, 2000 up to M96.04 66100500 with roller-type chain
  • Porsche 996 C4 3.4L 1997-08/01  >>August 15th, 2000 up to M96.04 66100500 with roller-type chain
Cars With Engine Codes:
M96.01 / M96.02 / M96.04

Diagram Ref No 35

What This Product Does:
The chain tensioner adjuster is a vital component in Porsche engines that use timing chains. Its role is to keep the timing chain under correct tension, ensuring smooth and precise synchronization between the crankshaft and camshafts.

Functions:

  • Maintains proper chain tension to prevent slack or excessive tightness.
  • Reduces chain noise and vibration.
  • Helps keep engine timing accurate for optimal performance.
  • Protects against premature wear of the chain and sprockets.

Symptoms Of A Faulty Chain Tensioner Adjuster:
  • Rattling or knocking noise from the engine, especially at startup.
  • Engine light triggered due to timing issues.
  • Engine misfires or rough running caused by timing irregularities.
  • Excessive timing chain wear or visible slack.
  • In severe cases, loss of timing leading to serious engine damage.

Why Replacement Matters:
The chain tensioner adjuster is a critical timing component. If it fails, the timing chain can skip teeth or lose tension, resulting in poor engine performance or catastrophic internal damage.
This part is especially important during engine rebuilds, timing chain services, or if unusual noises develop from the timing system.



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99610518059
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99610505
Product Information
Product Information
Chain Tensioner - Cylinder 1-3 or 4-6. (1 per engine)

porsche

Fits:
Porsche 996 C2 / C4 1998-05
Porsche 986 Boxster 1997-04

Click picture for large parts diagram.
Diagram Ref No 7.

Please Select below

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99610505
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99610525301/1
Product Information
Product Information
Timing chain guide rail kit, including o-ring (99970164740). 

Fits:
Porsche 986 Boxster 1997-04
Porsche 996 3.4L C2 / C4 >>2001 

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

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99610525301
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99610525301
99970164740

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99610525301
Product Information
Product Information
Guide Rail Kit.

Fits:
Porsche 986 Boxster 1997>>2004
Porsche 996 3.4L C2 / C4 >>2001

Diagram Ref No 9

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99610525301
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99610505401/1
Product Information
Product Information
Guide rail - Cylinder 1-3.
The timing chain tensioner is designed to maintain correct chain tension in Porsche M96 and M97 engines. This hydraulic tensioner ensures the timing chain remains tight, properly aligned, and stable across all engine speeds, preventing chain slack, noise, and timing deviation.

Fits:
Porsche 986 Boxster 2.7L /  3.2L  2003 - 2004
with Engine codes: M96.23 / M96.24

Porsche 987 Boxster 2.7L / 3.2L / 3.4L 2005 - 2008
with Engine codes M96.25 / M96.26 / M97.20 / M97.21 / M97.22

Porsche 987C 2.7L / 3.4L Cayman 2006 - 2008
with Engine codes  M97.20 / M97.21 / M97.22

Porsche 996 3.6L C2 / C4 / C4S 2002 - 2005
with Engine codes M96.03

Porsche 997.1 3.6L /3.8L  2005 - 2008
with Engine codes M96.05 / M97.01

Diagram Ref No 33.

Built to original Porsche specifications, the tensioner uses controlled oil pressure to absorb chain vibration and compensate for thermal expansion, ensuring precise valve timing and smooth engine operation. 

Over time, the timing chain tensioner can weaken internally, allowing the chain to develop slack and produce rattling noises, especially on start-up. A failing tensioner can cause timing drift, poor running, and accelerated wear of the guides and sprockets. If left unresolved, the chain may even skip a tooth, risking serious internal engine damage. Replacing the tensioner restores stable chain control, accurate timing, and long-term engine protection.

When to replace:
• You hear chain rattle, especially during cold start
 Fault codes or symptoms indicate timing deviation
 Engine runs rough, lacks power, or shows intermittent misfires
 Visible wear or oil leakage around the tensioner housing
 Chain guides have been replaced during an engine service
 Preventatively during M96/M97 engine rebuilds or high-mileage maintenance

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99610505401
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996105
Product Information
Product Information
Guide Rail - Cylinder 1-3 and  4-6

Fits:
Porsche 986 Boxster 2.7L /  3.2L  2003 - 2004
with Engine codes: M96.23 / M96.24

Porsche 987 Boxster 2.7L / 3.2L / 3.4L 2005 - 2008
with Engine codes M96.25 / M96.26 / M97.20 / M97.21 / M97.22

Porsche 987C 2.7L / 3.4L Cayman 2006 - 2008
with Engine codes  M97.20 / M97.21 / M97.22

Porsche 996 3.6L C2 / C4 / C4S 2002 - 2005
with Engine codes M96.03

Porsche 997.1 3.6L /3.8L  2005 - 2008
with Engine codes M96.05 / M97.01

Diagram Ref No 33.


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996105
99610516400
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Special Order item
99970164740::1
Product Information
Product Information
O-Ring For Slide Rail. 14 x 1.5.

Fits:
Porsche 986 Boxster 2.5L M96.20 1996>>1999
Porsche 986 Boxster 3.2L M96.21 1999>>2002
Porsche 986 Boxster 2.7L M96.22 1999>>2002
Cars With Engine Codes:
9620 / 9621 / 9622

Porsche 996 Carrera 3.4L M96.01 1997>>1999
Porsche 996 Carrera 3.4L M96.02 1998>>1999
Porsche 996 Carrera 3.4L M96.04 1999>>2001
Cars With Engine Codes:
9601 / 9602 / 9604

Porsche 996 Carrera 3.6L M96.03 2001>>2005
Cars With Engine Codes:
9603

O-Ring Fits On To Diagram Ref No 9

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99970164740
99970164740

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99970734440/1
Product Information
Product Information
O-ring - 18.77 x 1.78 - for timing chain adjuster or tensioner. 

Fits:

Porsche 986 Boxster / S 1997-04 - x3 required
Porsche 987 Boxster / S 2005-08 - x3 required
Porsche 987 Cayman / S 2006-08 - x4 required

Porsche 996 Carrera 1998-05 - x3 required
Porsche 997-1 Carrera 2005-08 - x4 required

Diagram ref. 25.



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Power steering pump pulley

porsche

Fits:
Porsche 996 >> 1999 Tiptronic
Porsche 996 >> 1999 Manual Without Air Con
Porsche 996 2000 >> Onwards ALL

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

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Power steering pump pulley

porsche

Fits:
Porsche 996 Turbo 2000-2005
Porsche 996 GT3-1 1999-2005
Porsche 997 Gen 1 Turbo 2007-2009
Porsche 997 Gen 2 Turbo 2010-2013
Porsche 997 GT3-2 2007-2011

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Power steering pump pulley. Porsche 996 >>1999

porsche

Fits:
Porsche 996 >> 1999 Manual With Air Con

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

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Solenoid Valve. Cylinders 1-3. Black.

porsche

Fits:
Porsche 986 Boxster / Boxster S 1997-04
Porsche 996 C2 / C4 >>2001

Click 'Zoom in' for large parts diagram.
Diagram ref no 10.

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Solenoid Valve. Cylinders 4-6. Grey.

porsche

Fits:
Porsche 986 Boxster / Boxster S 1997-04
Porsche 996 C2 / C4 >>2001

Click 'Zoom in' for large parts diagram.
Diagram ref no 10.

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Tensioner Blade Pad.
1 per engine.

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 MKI Boxster 2005-08
Porsche 987C MKI Cayman 2005-08
Porsche 996 Carrera 1998-05
Porsche 997 MKI Carrera 2005-08

Click picture for large parts diagram.
Diagram Ref No 19.
Special Order item
9A700836500
Product Information
Product Information
Tensioner Blade Screw M6
6 per engine. Price is for each.

porsche

Fits:
Porsche 986 Boxster / Boxster S 1997-04
Porsche 996 C2 / C4 / C4S 1998-05

Click picture for large parts diagram.
Diagram Ref No 31.

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Tensioner blade.
2 per engine. Sold each.

porsche

Fits:
Porsche 996 1998-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 30.

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DISPLAYING 33 to 48 (of 73 products)
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About Chains & Tensioners

Precision Timing Chains & Tensioners – Engine Synchronisation and Reliability for Porsche Models

The timing chain system is one of the most critical components of a Porsche engine, ensuring perfect synchronisation between the crankshaft and camshafts. This precise coordination allows valves to open and close at the right moment, maintaining smooth power delivery, fuel efficiency, and long-term engine health.

At Design911, we supply a comprehensive range of precision-engineered timing chains, guides, and hydraulic tensioners designed to meet or exceed manufacturer performance standards. Each component is manufactured from high-strength materials for exceptional wear resistance and durability — vital for high-revving, performance-oriented Porsche engines.

What Do Timing Chains and Tensioners Do?

A timing chain connects the crankshaft to the camshafts, ensuring accurate valve timing. The tensioner keeps the chain taut to prevent slack, vibration, or noise, maintaining precise timing under all load conditions.

Core Functions:

  • Synchronise engine timing between the camshaft and crankshaft.
  • Maintain valve timing accuracy for optimal combustion and power.
  • Prevent chain slack and noise through hydraulic or spring-loaded tensioning.
  • Ensure long-term reliability in both performance and everyday driving.

Together, these components preserve the exacting standards of Porsche engine operation — vital for both power and longevity.

Why Do Timing Chains and Tensioners Fail?

Over time, wear, oil degradation, and heat cycles can cause timing components to deteriorate. When neglected, they may stretch, seize, or lose tension — leading to severe engine damage.

Common Causes of Failure Include:

  • Chain stretch or elongation, resulting in timing misalignment.
  • Worn or leaking hydraulic tensioners, causing chain rattle on start-up.
  • Contaminated or degraded engine oil, accelerating wear.
  • Broken chain guides from heat stress or material fatigue.
  • Insufficient oil pressure, reducing hydraulic tensioner performance.

A failing timing chain system can lead to poor performance, rough idling, check-engine lights, or — in extreme cases — catastrophic valve-to-piston contact.

Why Replace with Performance-Grade Timing Components?

Replacing aging timing components with manufacturer-quality parts ensures reliable valve timing, smoother operation, and peace of mind.

Key Benefits:

  • Restores precise valve timing for peak performance and efficiency.
  • Prevents engine noise and vibration caused by chain slack.
  • Protects against catastrophic engine damage due to chain failure.
  • Constructed from heat-treated, high-grade steel for long service life.
  • Engineered to match original timing profiles for Porsche engines.
  • Perfect fitment for classic air-cooled and modern water-cooled models.

Whether performing preventive maintenance or a complete rebuild, these timing chains and tensioners deliver race-ready reliability with road-tested durability.

Highlights:

  • Precision-engineered timing chains, guides, and tensioners for Porsche engines.
  • Restores timing accuracy and eliminates start-up rattle or misfire issues.
  • Built from heat-treated alloy steel for maximum longevity.
  • Hydraulic and mechanical tensioners available for various Porsche models.
  • Ideal for performance rebuilds and preventative maintenance.
  • Compatible with air-cooled and water-cooled Porsche engines.

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