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Chains & Tensioners

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DISPLAYING 17 to 29 (of 29 products)
1 2
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.

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Related, superseded, cross reference or alternative numbers for comparison.

99660590100
99660590100

The product you are viewing cross references to these numbers
Special Order item
99660590200
Product Information
Product Information
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.

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Related, superseded, cross reference or alternative numbers for comparison.

99660590200
99660590200

The product you are viewing cross references to these numbers
Special Order item
99610519500
Product Information
Product Information
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.

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Related, superseded, cross reference or alternative numbers for comparison.

9A700836500
99610516252
9A700836500

The product you are viewing cross references to these numbers
Special Order item
99610516555
Product Information
Product Information
Tensioner Blade. 1 per engine.

porsche

Fits:
Porsche 986 Boxster / Boxster S 1997-04
Porsche 987 Boxster / Boxster S 2005-08
Porsche 987C Cayman / Cayman S 2006-08
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 997 C2 / C4 / C2S / C4S 2005-08 COUPE/CABRIO

Click picture for large parts diagram.
Diagram Ref No 18.


This product supersedes Porsche's old part numbers:
- 996 105 165 54.
Special Order item
99610516651
Product Information
Product Information
Tensioner Blade.1 per engine.

porsche

Fits:
Porsche 986 Boxster / Boxster S 1997-04
Porsche 987 Boxster / Boxster S 2005-08
Porsche 987C Cayman / Cayman S 2006-08
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 997 C2 / C4 / C2S / C4S 2005-08 COUPE/CABRIO

Click picture for large parts diagram.
Diagram Ref No 22.
99610517753/1
Product Information
Product Information
Timing chain - OPEN Type
This OE Match timing chain is an open-type replacement camshaft timing chain for Porsche 996 and 986 Boxster engines. It is designed to match the original-style fit and function, helping maintain correct valve timing and reliable engine operation.
2 per engine. Sold each. 

Fits:
Porsche 996 3.4L C2/C4 1998 - 2001
Porsche 986 Boxster 1997 - 2004

Diagram Ref No 26

The timing chain links the crankshaft and camshaft drive system, keeping the camshafts synchronised with engine rotation. This ensures the intake and exhaust valves open and close at the correct time, supporting smooth running, efficient combustion, and dependable engine performance.

Functions
Drives the camshaft timing system
 Keeps crankshaft and camshaft timing synchronised
 Supports correct intake and exhaust valve timing
 Helps maintain smooth engine running and performance
 Replaces stretched, worn, noisy, or damaged timing chains
 Open-type design for service and engine rebuild applications
 OE Match replacement for timing chain repair or engine overhaul.

Why Replace This Part?
Timing chains are exposed to constant load, oil, heat, and high-speed operation. Over time, the chain can stretch, wear, become noisy, or affect accurate camshaft timing. A worn timing chain may cause rattling noises, poor running, timing faults, reduced performance, or engine management warning lights. Replacing the chain helps restore timing accuracy and supports long-term engine reliability.

When to Replace This Part
  The timing chain is stretched, worn, noisy, or damaged
•  There is rattling from the timing chain area
  Camshaft timing faults or related diagnostic codes are present
  The engine is being rebuilt or overhauled
  Chain guides, tensioners, sprockets, or rails are being replaced
  The timing system has been dismantled for repair
  As preventative replacement during major engine service

Where it fits on the car
This timing chain fits inside the engine timing chain system, forming part of the camshaft drive assembly. It runs within the engine timing case area and works with the chain guides, tensioners, sprockets, and camshaft drive components.

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

99610517753
99610517753
99610517752

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Special Order item
99610517158
Product Information
Product Information
Tooth-Type Timing Chain Used To Connect The Engine’s Crankshaft To The Intermediate Shaft (IMS).

Fits:
Porsche 986 Boxster 2.7L 2001>>2004
Porsche 986 Boxster S 3.2L 2001>>2004 

Porsche 987.1 Boxster 2.7L MKI 2005>>2008
Porsche 987.1 Boxster S 3.2L MKI 2005
Porsche 987.1 Boxster S 3.4L MKI 2006>>2008

Porsche 987.1 Cayman 2.7L MKI 2005>>2008 
Porsche 987.1 Cayman S 3.4L MKI 2006>>2008

Porsche 996 Carrera 3.4L 2001
Porsche 996 Carrera 4 3.4L 2001
Porsche 996 Carrera 3.6L 2002>>2004
Porsche 996 Carrera 4 3.6L 2002>>2004
Porsche 996 Carrera 4S 3.6L 2002>>2005 
Porsche 996 Targa 3.6L 2002>>2005

Porsche 997.1 Carrera 3.6L MKI 2005>>2008
Porsche 997.1 Carrera S 3.8L MKI 2005>>2008
Porsche 997.1 Carrera 4 3.6L MKI 2006>>2008
Porsche 997.1 Carrera 4S 3.8L MKI 2006>>2008
Porsche 997.1 Targa 4 3.6L MKI 2007>>2008
Porsche 997.1 Targa 4S 3.8L MKI 2007>>2008

NOTE: For The 2001 Model Year, Porsche Replaced The Intermediate Shaft's Roller-Type (Duplex) Chain With A Tooth-Type Chain. This Listing Is For The Later Tooth-Type Chain And Is Not Compatible With Earlier Engines Equipped With The Roller-Type Chain.


While Unlikely, It's Possible That An Earlier Engine May Have Been Rebuilt And Upgraded To Use The Newer Chain Design. For This Reason, Design 911 Strongly Recommends Confirming Which Type Of Chain Your Engine Uses Before Placing An Order. To Assist With Identification, Our Product Images Include A Helpful Comparison Between The Roller-Type (Duplex) Chain And The Tooth-Type Chain.

Diagram Ref No 17  



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

99610517158
99610517156
99610517158

The product you are viewing cross references to these numbers
99610517158/1
Product Information
Product Information
Tooth-type timing chain used to connect the engine’s crankshaft to the intermediate shaft (IMS).

Fits:
Porsche 986 Boxster 2.7L 2001 - 2004
Porsche 986 Boxster S 3.2L 2001 - 2004 

Porsche 987-1 Boxster 2.7L 2005 - 2008
Porsche 987-1 Boxster S 3.2L 2005
Porsche 987-1 Boxster S 3.4L 2006 - 2008

Porsche 987-1 Cayman 2.7L 2005 - 2008 
Porsche 987-1 Cayman S 3.4L 2006 - 2008

Porsche 996-1 Carrera 3.4L 2001
Porsche 996-1 Carrera 4 3.4L 2001

Porsche 996-2 Carrera 3.6L 2002 - 2004
Porsche 996-2 Carrera 4 3.6L 2002 - 2004
Porsche 996-2 Carrera 4S 3.6L 2002 - 2005 
Porsche 996-2 Targa 3.6L 2002 - 2005

Porsche 997-1 Carrera 3.6L 2005 - 2008
Porsche 997-1 Carrera S 3.8L  2005 - 2008
Porsche 997-1 Carrera 4 3.6L 2006 - 2008
Porsche 997-1 Carrera 4S 3.8L 2006 - 2008
Porsche 997-1 Targa 4 3.6L 2007 - 2008
Porsche 997-1 Targa 4S 3.8L 2007 - 2008

Diagram ref. 17  

NOTE:
 For the 2001 model year, Porsche replaced the intermediate shaft's roller-type (duplex) chain with a tooth-type chain. This listing is for the later tooth-type chain and is not compatible with earlier engines equipped with the roller-type chain.

While unlikely, it's possible that an earlier engine may have been rebuilt and upgraded to use the newer chain design. For this reason,
Design 911 strongly recommends confirming which type of chain your engine uses before placing an orderTo assist with identification, our product images include a helpful comparison between the roller-type (duplex) chain and the tooth-type chain.

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

99610517158
99610517156
99610517158

The product you are viewing cross references to these numbers
Special Order item
99610517054
Product Information
Product Information
Timing chain. 2 per engine. Price is for each.

porsche

Fits:
Porsche 996 3.4L C2 / C4 1998-01
Porsche 986 Boxster 1997-04

Click 'Zoom in' for large parts diagram.
Diagram ref no 6.

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

99610517054
99610517053
99610517054
99610517052
25396

The product you are viewing cross references to these numbers
99610517054/1
Product Information
Product Information
Timing Chain. 2 per engine

febi

Fits:
Porsche 996 3.4L C2 / C4 1998-01
Porsche 986 Boxster 1997-04

Click 'Zoom in' for large parts diagram.
Diagram Ref No 6.

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

99610517054
99610517053
99610517054
99610517052
25396
50027067

The product you are viewing cross references to these numbers
Special Order item
99610517753
Product Information
Product Information
Timing Chain. 2 per engine. Sold each

porsche

Fits:
Porsche 996 3.4L C2/C4 1998-01
Porsche 986 Boxster 1997-04

Click 'Zoom in' for large parts diagram.
Diagram ref No 26.

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

99610517753
99610517752
99610517753

The product you are viewing cross references to these numbers
99610517753/2
Product Information
Product Information
Engine timing chain. CLOSED TYPE.
OE Match replacement engine timing chain - also referred to as the camshaft/intermediate shaft timing chain - designed to replicate the original Porsche timing chain used in the engine timing drive system of early 911 (996) and Boxster engines.
2 per engine. Sold each.

Fits:
Porsche 996 3.4L C2/C4 1998 - 2001
Porsche 986 Boxster 1997 - 2004

Diagram Ref No 26.

The timing chain ensures precise mechanical synchronization between critical rotating components of the engine - primarily the crankshaft and camshafts (and in some layouts, the intermediate shaft). It maintains the correct timing of valve opening and closing events relative to piston position, which is vital for efficient combustion, smooth engine operation, and proper power delivery.

Function:
  Synchronises rotation of the crankshaft and camshafts
  Maintains correct valve timing for intake and exhaust events
  Transfers mechanical drive through intermediate gears/shafts
  Supports reliable engine performance and emissions control.

A worn or elongated timing chain can cause timing errors, engine noise, rough running, or in more severe cases, engine damage if the timing relationship is lost.

The timing chain is a critical engine component. Over long service intervals and high mileage, the chain can stretch or wear, leading to slack, improper timing, and noisy operation. If not addressed, timing chain issues can cause:
  Engine noise (chain rattle)
  Poor idle and power delivery
  Timing inaccuracies affecting combustion
  Potential engine damage if timing is lost.

Replacing worn chains with an OE Match unit helps ensure accurate timing, preserves engine performance, and protects other internal engine components.

When to replace. Replace the timing chain when:
  There is rattling or slapping noise from the timing cover area
  Timing chain slack is detected in inspection
  You are performing an engine rebuild or overhaul
  Timing tensioner or guides show wear
  Irregular idle or misfires suggest timing drift

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

99610517753
99610517753
99610517752

The product you are viewing cross references to these numbers
DISPLAYING 17 to 29 (of 29 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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