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Chains & Tensioners

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DISPLAYING 17 to 25 (of 25 products)
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SR222-GT3
Product Information
Product Information
Timing chain starp / support for Porsche 911

When assembling the case halves on the 911 engine STOMSKI RACING's SR222-GT3 Timing Chain Strap will prove instrumental in supporting the chain to allow easier mating of the halves. Proper length, radius bend, tension, and quality steel insure that this tool will provide reliable and consistent support for all your engine builds.

fits
• SR222-GT3 for the 996/997 GT2, GT3, and TT engines.
Special Order item
99710506171
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Product Information
Timing chain tensioner. LEFT.

porsche

Fits:
Porsche 997.1 Turbo / GT2 2007-09
Porsche 997.2 Turbo / GT2 2010-13
Porsche 997 GT3 2007-11

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

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Related, superseded, cross reference or alternative numbers for comparison.

99710506171
95910505103
99710506171
99710506170

The product you are viewing cross references to these numbers
99710506171/1
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Product Information
Timing chain tensioner. LEFT.

Fits:
Porsche 997.1 Turbo / GT2 2007-09
Porsche 997.2 Turbo / GT2 2010-13
Porsche 997 GT3 2007-11

Diagram ref no 7

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Related, superseded, cross reference or alternative numbers for comparison.

99710506171
95910505103
99710506171
99710506170

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Special Order item
99710506271
Product Information
Product Information
Timing chain tensioner. RIGHT.

porsche

Fits:
Porsche 997.1 Turbo / GT2 2007-09
Porsche 997.2 Turbo / GT2 2010-13
Porsche 997 GT3 2007-11

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

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Related, superseded, cross reference or alternative numbers for comparison.

99710506271
99710506271
99710506270
95910505203

The product you are viewing cross references to these numbers
99710506271/1
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Product Information
Timing chain tensioner. Cyl. 4-6. RIGHT.
This OE Match timing chain tensioner is a direct replacement for the original Porsche component fitted to the right-hand cylinder bank (cylinders 4–6). It maintains proper tension on the engine timing chain to ensure precise camshaft timing and smooth engine operation.

Fits:
Porsche 997.1 Turbo / GT2 2007 - 2009
Porsche 997.2 Turbo / GT2 2010 - 2013
Porsche 997 GT3 2007 - 2011

Diagram ref no 10

The timing chain tensioner maintains the correct tension on the engine timing chain, ensuring accurate synchronisation between the crankshaft and camshafts. This helps the engine run smoothly, prevents chain slack, and protects against timing-related engine damage.

Function
•  Maintains correct timing chain tension
•  Prevents chain slack and timing fluctuation
•  Ensures accurate camshaft and crankshaft synchronisation
•  Reduces timing chain vibration and noise
•  Supports reliable high-performance engine operation

Position: Right side / cylinders 4–6
OE reference: 99710506271
Supersedes: 99710506270, 95910505203
Recommended gasket/seal: 99610517270 (sold separately)
Quantity required: 1 per engine side

Over time, timing chain tensioners can wear internally or lose hydraulic pressure efficiency. A failing tensioner may cause timing chain noise, inaccurate valve timing, or excessive chain movement, potentially leading to severe engine damage. Replacing a worn tensioner restores correct timing stability, protects internal engine components, and maintains performance reliability.

When to replace
•  Rattling noise from timing chain area during startup
•  Timing-related fault codes or irregular engine timing
•  During engine rebuild or timing system service
•  Excessive timing chain slack detected
•  Oil leakage around tensioner housing

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

99710506271
99710506271
99710506270
95910505203

The product you are viewing cross references to these numbers
9A110514203/1
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Product Information
Timing chain
OE Match timing chain for Porsche Boxster, Cayman, 997, and 991 models. This replacement timing chain helps maintain accurate camshaft timing and reliable engine operation.
Sold individually

Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2013 - 2016
Porsche 997.2 2009 - 2012
Porsche 991.1 2012 - 2016

Diagram ref no 1

The timing chain synchronises engine rotation between the crankshaft and camshafts. Correct timing chain operation is essential for accurate valve timing, smooth running, engine performance, and long-term reliability.

Functions
Replaces the engine timing chain
 Helps synchronise crankshaft and camshaft movement
 Supports accurate valve timing
 Helps maintain smooth engine running and performance
 Used during timing chain, camshaft drive, or engine rebuild service
 Replaces stretched, noisy, worn, or damaged timing chains
 OE Match replacement for Porsche engine timing system repair.

Why Replace This Part?
Timing chains are highly loaded engine components and can wear, stretch, become noisy, or suffer damage over time. A worn or stretched timing chain may cause timing noise, poor running, fault codes, reduced performance, or incorrect camshaft timing. Replacing the timing chain helps restore correct engine timing and protects related timing system components.

When to Replace This Part
  Timing chain noise or rattle is present
  Timing chain stretch is detected
  Camshaft timing faults or related engine codes are present
  Engine performance is reduced or running is uneven
  Timing chain guides, tensioners, or camshaft drive parts are being replaced
  Engine rebuild or major timing service is being carried out
  Preventative replacement is required during Porsche engine maintenance

Where it fits on the car
This timing chain fits within the engine timing / camshaft drive system on Porsche Boxster, Cayman, 997, and 991 models. Exact chain position can vary depending on engine type and timing layout.

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

9A110514203
9A110514203
9A110514202

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Special Order item
99710555190
Product Information
Product Information
Timing chain.

porsche

Fits:
Porsche 997 GT3 RS 3.8L 2010>>
Porsche 997 GT3 RS 2011>>
Porsche 997 GT3 Cup 3.8L 2010>>
Porsche 991.1 GT3 Cup 3.8L 2013-16

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

99710555190
99710555190

The product you are viewing cross references to these numbers
Special Order item
9A110514203
Product Information
Product Information
Timing Chain. Crankshaft To Cam. EACH.

porsche

Fits:
Porsche 987.2 Boxster
Porsche 981 Boxster
Porsche 987C.2 Cayman
Porsche 981C Cayman
Porsche 997.2
Porsche 991.1

Price is for each.

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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

9A110514203
9A110514203
9A110514202

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Special Order item
99907365001
Product Information
Product Information
Torx screw M5x12 throttle control element. 

porsche

Fits:
Porsche 987.2 Boxster / Cayman - 2009 to 2012
Porsche 981 Boxster / Cayman - 2012 to 2016
Porsche 718 Boxster / Cayman  - 2017 Onwards
Porsche 997.2 - 2009 to 2012
Porsche 991 - 2012 to 2018


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

99907365001
99907365001

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DISPLAYING 17 to 25 (of 25 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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