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Chains & Tensioners

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DISPLAYING 17 to 22 (of 22 products)
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Special Order item
99310708800
Product Information
Product Information
Oil bridge for chain tensioner.
Price is EACH.

Fits:
Porsche 993 1995-98

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Diagram ref no 21

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99310708800
99310708800

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99310708800/1
Product Information
Product Information
Oil bridge for chain tensioner.
Price is EACH.

Fits:
Porsche 993 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 21

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99310708800
99310708800

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Special Order item
99310502201
Product Information
Product Information
Timing chain adjuster cover. Fits: Left or right. Sold each.

Fits:
Porsche 993 1994-98

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99310502201
99310502201

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SR222
Product Information
Product Information

The Stomski Racing timing chain strap / support is a workshop tool for Porsche 911 engine assembly. It holds the chain while the crankcase halves are brought together. Sold individually.

Fits:
Porsche 911 1965-1968 2.0L / 912 SWB (F)
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1978-1983 3.0L / SC
Porsche 911 1984-1986 3.2L
Porsche 911 1987-1989 3.2L G50
Porsche 911 1975-1977 3.0L Turbo (930)
Porsche 911 1978-1989 3.3L Turbo (930)
Porsche 964 (911) C2 1989-93
Porsche 964 (911) C4 1989-93
Porsche 964 (911) RS 3.6L 1991-93
Porsche 964 (911) RS 3.8L 1991-93
Porsche 964 (911) TURBO 3.3L 1991-93
Porsche 964 (911) TURBO 3.6L 1991-93
Porsche 993 (911) C2 1994-97
Porsche 993 (911) C4 1994-97
Porsche 993 (911) RS 1994-97
Porsche 993 (911) C2S 1994-97
Porsche 993 (911) C4S 1994-97
Porsche 993 (911) TURBO 1994-96
Porsche 993 (911) GT2 1994-97
Porsche 993 (911) TURBO S 1994-97

The manufacturer specifies SR222-GT3 for Porsche 996 / 997 GT2, GT3 and TT engines. Select the appropriate version for the engine being assembled. 

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

During crankcase assembly, the strap provides temporary chain support to assist with joining the two halves. It is an assembly aid rather than a replacement timing chain or operating tensioner. 

Functions

Supports the timing chain during assembly and assists with positioning the crankcase halves for joining. ()

Technical Details

Manufacturer: Stomski Racing.
Product references: SR222 and SR222-GT3.
Construction: steel.
The strap combines a formed bend, specified length and spring tension to support the chain.
Two application-specific sizes are offered; each strap is sold individually. 

Special Order item
96410517703
Product Information
Product Information
Timing chain tensioner gasket. Sold each.

Fits:
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

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

96410517703
96410517703
577.960

The product you are viewing cross references to these numbers
96410517703/1
Product Information
Product Information
Timing chain tensioner gasket. Sold each.

Fits:
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 12

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

96410517703
96410517703
577.960

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DISPLAYING 17 to 22 (of 22 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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