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DISPLAYING 33 to 48 (of 71 products)
<< 2 3 4 5
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

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Best Price
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
99610505401

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Special Order item
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
99610505401

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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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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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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
99614722371
Product Information
Product Information
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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99614722371
99614722371
996.147.223.71

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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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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.

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99660590200
99660590200

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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.

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9A700836500
99610516252
9A700836500

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Special Order item
99610517552
Product Information
Product Information
Timing chain tensioner blade
Original Porsche Genuine OE timing chain tensioner guide used in the timing system. It provides the guided surface against which the timing chain runs under tension, working together with the timing chain tensioner to ensure correct chain tension and positioning.
Sold each, 2 required per vehicle

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L  1997 - 2002
Porsche 996 3.4L 1998 - 2002

Diagram ref no 30.

This timing chain tensioner guide is a factory-original Porsche component, engineered to the exact material, dimensions, and performance standards specified by Porsche. Installed within the engine’s timing case, it serves as a precision wear surface for the timing chain under the applying force of the hydraulic tensioner.

The timing chain tensioner guide works with the hydraulic tensioner to maintain consistent tension on the timing chain as it cycles over the crankshaft and camshaft sprockets. It provides a controlled sliding surface that helps prevent slack, reduces chain vibration and noise, and supports accurate cam/crank synchronization throughout the engine’s operating range.

Function: Mounted in the timing chain housing, this OEM guide interfaces directly with the tensioner assembly and the timing chain itself. As the hydraulic tensioner applies pressure, the guide helps distribute that force evenly across the chain’s path, ensuring that the chain remains correctly tensioned and aligned. This contributes to smooth, quiet timing system operation, consistent valve timing, and reduced risk of premature wear on timing chains and sprockets.

Timing chain tensioner guides are critical wear items in Porsche M96 engines. Over time, the guide surface can wear, deform, or develop grooves due to prolonged chain contact and heat cycling. A compromised guide can lead to slack, chain vibration, noise (“chain rattle”), and irregular chain travel - conditions that increase stress on the chain and sprockets, and can lead to premature system wear or failure. Replacing worn tensioner guides with Genuine Porsche OE parts restores the exact engineered surface and interaction with the timing chain and tensioner. This helps maintain quiet, accurate timing operation and protects the engine’s costly timing components.

When to replace:
Noise from the timing chain area (rattle or chatter)
 During timing chain system inspection or overhaul
 Visible wear or plastic debris from the guide surfaces
 High-mileage preventive maintenance
 Whenever the timing system is serviced or the tensioner is replaced

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99610517552
99610517552

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Best Price
99610517552/1
Product Information
Product Information
Timing chain tensioner blade
OE Match replacement chain guide used within the engine timing system. It provides the wear surface the timing chain runs against while the hydraulic tensioner maintains correct chain tension. It supports and guides the timing chain, helping the tensioner maintain stable chain tension and reducing chain slap. This helps protect timing accuracy and contributes to quieter, smoother engine operation.
Sold each, 2 required per vehicle

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L  1997 - 2002
Porsche 996 3.4L 1998 - 2002

Diagram ref no 30.

This OE Match tensioner blade is manufactured to OE-equivalent dimensions and guide profile to ensure correct chain tracking and compatibility with the original timing components. As the chain runs over the guide, the blade’s engineered surface minimises friction and noise while resisting wear from constant high-speed chain contact. It’s a key service item for M96 timing systems - ideal for rebuilds or preventative maintenance where aged guide material may become brittle or worn.

Fitted inside the timing case, the blade acts as a controlled contact surface for the chain while the tensioner applies pressure to keep the chain correctly tensioned. Maintaining proper guide condition helps prevent excessive wear debris and reduces the risk of poor chain control over time.

Tensioner blades are wear components. As they age, the guide surface can wear and shed material, which can affect chain control and create debris in the oil system. Renewing worn guides helps maintain stable timing chain behaviour and supports long-term timing system reliability.

When to replace:
•  During engine rebuild / timing service
•  Evidence of guide wear or debris in oil (plastic particles)
•  Timing system noise that indicates chain slap/rattle
•  High-mileage preventative maintenance



Related reference numbers
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99610517552
99610517552

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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.
Special Order item
99610516571
Product Information
Product Information
Tensioner Blade. Porsche 996 Turbo / 996 GT3 / 997 GT3

porsche

Fits:
Porsche 996 Turbo 2001-05
Porsche 996 GT3 2000-05
Porsche 997 GT3 2007-11

Click 'Zoom in' for large parts diagram.
Diagram Ref No 18

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99610516571
99610516571

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DISPLAYING 33 to 48 (of 71 products)
<< 2 3 4 5
Also found on these pages
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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