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DISPLAYING 17 to 30 (of 30 products)
1 2
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Related, superseded, cross reference or alternative numbers for comparison.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
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

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Related, superseded, cross reference or alternative numbers for comparison.

99610517552
99610517552

The product you are viewing cross references to these numbers
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
Related, superseded, cross reference or alternative numbers for comparison.

99610517552
99610517552

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.
Best Price
99610517753/1
Product Information
Product Information
Timing chain. 2 per engine. Sold each. OPEN Type

oematch

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
25199
99610517753
99610517752
25393

The product you are viewing cross references to these numbers
Special Order item
99610517353
Product Information
Product Information
Timing chain guide.
Genuine Porsche Original Equipment (OE) timing chain guide used in the timing system. It provides a precisely engineered surface against which the timing chain runs, helping maintain correct chain alignment and reduce chain noise and wear.
Sold each, 2 required per engine. 

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997 - 2002
Porsche 996 3.4L 1998 - 2001

Diagram ref no 33.

The timing chain guide provides a wear-resistant contact surface that supports the timing chain’s path as it moves over the crankshaft and camshaft sprockets. It helps maintain correct chain alignment, reduces vibration and chatter, and minimises wear on the chain and related components - especially under repeated load cycles and high-RPM conditions.

Installed inside the timing case, this OE guide sits in the chain’s routing path and provides a controlled sliding surface that interacts with the chain links. It works in conjunction with the timing chain tensioner (e.g., 99610517552) to ensure correct chain tension, reduce chain slack, and preserve accurate valve timing as designed by Porsche.

The timing chain guide is a critical wear item in Porsche M96 engines. Over time, the original guide surfaces can wear, crack, or deform due to friction and engine heat. A compromised guide can lead to timing chain noise (often described as “chain rattle”), reduced tension control, or uneven wear of the chain and sprockets.

Replacing worn or failed guides with a Genuine Porsche OE part restores the exact engineered surface, ensures accurate chain control, reduces noise, and helps protect high-cost timing system components - preserving the precision and performance that Porsche designed into the engine.

When to replace:
•  Engine exhibits timing chain noise, especially at start-up or idle
•  Timing chain slack or vibration is observed
•  During major engine service or rebuild
•  When original guide shows cracking, abrasion, or wear scoring
•  Preventive replacement on high-mile engines

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

99610517353
99610517353

The product you are viewing cross references to these numbers
Best Price
99610517353/1
Product Information
Product Information
Timing chain guide.
OE Match timing chain guide designed to replicate the original Porsche factory component used in the timing chain system of certain Porsche flat-six engines. It provides a smooth, wear-resistant surface against which the timing chain runs, helping maintain correct chain alignment and reduce noise.
Sold each, 2 required per engine. 

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997 - 2002
Porsche 996 3.4L 1998 - 2001

Diagram Ref No 33.

The timing chain guide provides a guided surface for the timing chain, helping it run smoothly over the cam and crank sprockets. It helps minimize vibration, reduce “chain slap,” and maintain correct chain tracking as the chain cycles through its range of motion.

Function: Installed within the timing cover/case, the guide sits along the chain’s routing path and offers a stable, sliding surface that interacts with the chain links. In conjunction with the timing chain tensioner (such as part 99610517552), it helps maintain correct chain tension, reduces wear on both the chain and sprockets, and supports quiet, efficient engine operation.

Timing chain guides are wear items subject to constant chain contact and engine vibration. Over time, original guides can wear unevenly, crack, or shed material - which can lead to chain noise, reduced tension stability, and accelerated wear on the chain and sprockets. Replacing worn guides with an OE Match component helps preserve timing accuracy and reduces the risk of serious timing system damage.

When to replace:
Engine exhibits chain rattle or timing noise
 Original guides are cracked, worn, or contaminated
 Timing system is being serviced or rebuilt
 During high-mile preventive maintenance
 After tensioner service or replacement

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

99610517353
99610517353

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
99610517157
Product Information
Product Information
Timing chain. 1 per engine.

porsche

Fits:
Porsche 996 3.4L 1998-00
Porsche 986 Boxster 1997-01

Click 'Zoom in' for large parts diagram.
Diagram Ref No 17.

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

99610517157
99610517155
25394
99610517157

The product you are viewing cross references to these numbers
Best Price
99610517157/2
Product Information
Product Information
Timing chain. 1 per engine.

oematch

Fits:
Porsche 996 3.4L 1998-00
Porsche 986 Boxster 1997-01

Click 'Zoom in' for large parts diagram.
Diagram Ref No 17.

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

99610517157
99610517154
99610517155
99610517157
25394
50034371

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
Best Price
99610517753/2
Product Information
Product Information
Timing chain. 2 per engine. Sold each.

oematch

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
50035791
25199
99610517753
99610517752
25393

The product you are viewing cross references to these numbers
DISPLAYING 17 to 30 (of 30 products)
1 2
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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