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Chains & Tensioners

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DISPLAYING 1 to 16 (of 28 products)
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99610517353KIT
Product Information
Product Information
Chain Guide. SET OF 2

2x Guides, timing chain Piece 99610517353
2x Tensioner Guide, timing chain Piece 99610517552

oematch

Fits:
Porsche 986 Boxster
Porsche 996 1998-05

Click 'Zoom in' for large parts diagram.
Diagram Ref No 33 & 30

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99610517353KIT
99610517552
99610517353

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99610517353KIT1
Product Information
Product Information
Chain Guide. SET OF 2

2 x Guides, timing chain Piece 99610517353
2 x Tensioner Guide, timing chain Piece 99610517552

porsche

Fits:
Porsche 986 Boxster
Porsche 996 1998-05

Click 'Zoom in' for large parts diagram.
Diagram Ref No 33 & 30

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99610517353KIT1
99610517552
99610517353

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ENGINEKIT12
Product Information
Product Information
Timing chain set camshafts for PORSCHE 996 3.4L Carrera 986 2.5L 2.7L 3.2L 


oematch

This timing chain kit includes the timing chains for the camshaft and intermediate shaft, as well as the slide and tension rails.

Due to the complex design with an intermediate shaft and two overhead camshafts, the water boxers of the modern Porsche 911 Carrera and Boxster have a variety of chains and slide rails. These vary depending on the displacement or model year, even within a series.

The chain guides were slightly changed between the 3.4L and 3.6L Carrera engines from 2001 to 2002. The engines of the 911 turbo and GT models, however, are based on the proven 911 technology from the previous models. The timing chains as well as slide rails and tensioning rails for the valve control are fundamentally different.

Fits: 

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
  • Porsche 996 C2 3.4L 1997-08/01
  • Porsche 996 C4 3.4L 1997-08/01



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ENGINEKIT12
99610517054
996.105.170.54
996 105 170 54
99610517157
996.105.171.57
996 105 171 57
99610517353
996.105.173.53
996 105 173 53
99610517552
996.105.175.52
996 105 175 52
99610517753
996.105.177.53
996 105 177 53
99610525300
996.105.253.00
996 105 253 00
99610517052
996.105.170.52
996 105 170 52
99610517053
996.105.170.53
996 105 170 53
99610517154
996.105.171.54
996 105 171 54
99610517155
996.105.171.55
996 105 171 55
99610517752
996.105.177.52
996 105 177 52
99610525301
996.105.253.01
996 105 253 01

The product you are viewing cross references to these numbers
Special Order item
99970734440
Product Information
Product Information
Chain adjuster sealing o-ring. 18,77 x 1,78
3 per engine. Price is for each.

porsche

Fits:
Porsche 996
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 997.1 Gen

Click 'Zoom in' for large parts diagram.
Diagram ref no 25

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99970734440
99970734440

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Special Order item
90012314730
Product Information
Product Information
Chain adjuster sealing ring. 27 x 32
3 per engine. Price is for each.

porsche

Fits:
Porsche 996
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 997.1 Gen

Click 'Zoom in' for large parts diagram.
Diagram ref no 37

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90012314730
90012314730

The product you are viewing cross references to these numbers
90012314730/1
Product Information
Product Information
Chain adjuster sealing ring. 27 x 32
3 per engine. Price is for each.

Fits:
Porsche 996
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 997.1 Gen

Click 'Zoom in' for large parts diagram.
Diagram ref no 37

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90012314730
90012314730

The product you are viewing cross references to these numbers
Special Order item
99610517353
Product Information
Product Information
Chain Guide. 2 per engine.

porsche

Fits:
Porsche 986 Boxster
Porsche 996 1998-05

Click picture for large parts diagram.
Diagram Ref No 33.
99610517353/1
Product Information
Product Information
Chain guide.
2 per engine. Sold each.

oematch

Fits:
Porsche 986 Boxster
Porsche 996 1998-05

Click 'Zoom in' for large parts diagram.
Diagram Ref No 33.

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99610517353
99610517353
25606

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Special Order item
99610518059
Product Information
Product Information
Chain adjuster. Porsche 986 / 996 >>15/08/2000 

Fits:
Porsche 986 2.7L Boxster >>August 15th, 2000 up to M96.22 65100500 with roller-type chain
Porsche 986 3.2L Boxster S >>August 15th, 2000 up to M96.21 65100500 with roller-type chain
Porsche 996 3.4L 2000 >>August 15th, 2000 up to M96.04 66100500 with roller-type chain

Diagram ref no 35

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99610518059
99610518059
99610518054
99610518057

The product you are viewing cross references to these numbers
99610518059/1
Product Information
Product Information
Chain Tensioner Adjuster.
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 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
Cars With Engine Codes:
M96.20 / M96.21 / M96.22

  • Porsche 996 C2 3.4L 1997-08/01
  • Porsche 996 C4 3.4L 1997-08/01
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
99610518059
99610518054
99610518057

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Special Order item
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
99610505158
99610505358

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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
99610525300
99610525301
99970164740

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Special Order item
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
99610525301
99610525300

The product you are viewing cross references to these numbers
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

The product you are viewing cross references to these numbers
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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99970734440
99970734440

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Special Order item
99660590100
Product Information
Product Information
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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99660590100
99660590100

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DISPLAYING 1 to 16 (of 28 products)
1 2
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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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