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Chains & Tensioners

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93010505803
Product Information
Product Information
Chain tensioner.
Fits Left or Right Side

porsche

Fits:
Porsche 911 1984-89 3.2L
Porsche 930 Turbo 1984-89
Porsche 964 Turbo 3.3L

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93010505803
93010505803

The product you are viewing cross references to these numbers
93010505803/1
Product Information
Product Information
Chain tensioner. Fits Left or Right Side

oematch

Fits:
Porsche 911 1984-89 3.2L
Porsche 930 Turbo 1984-89
Porsche 964 Turbo 3.3L

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93010505803
93010505803

The product you are viewing cross references to these numbers
Special Order item
99970169040
Product Information
Product Information
Engine timing chain tensioner O-ring.
Sold each.

Fits:
Porsche 911 1984 - 1989
Porsche 964 Turbo 3.3L 1990 - 1992 (Engine code: 3069)

Diagram ref no 11

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99970169040
99970169040

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SR011
Product Information
Product Information
Mechanical chain tensioners, Set of 2 for Porsche 911

stomski

Use these specially designed and fabricated mechanical tensioners to set cam timing, or as a bullet-proof alternative to pressure fed or hydraulic tensioners for racing.
CNC machined from 6061 aluminum and anodized for protection, these will become an integral part of your tool box or race engine. Complete with tensioning bolts, locking nuts, and spacers.

Comes in a set of TWO.

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SR011
93010505304
93010505803
93010591199

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SR008
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Product Information
Sprocket alignment tool for Porsche 911

stomski

Sprocket alignment on the 911 engine requires an accurate and repeatable ability to measure the offset of the sprockets and lay shaft. Simply using a straight edge and vernier calipers requires at least three hands and rarely produces precise measurements. Now, with the SR008, measuring sprocket alignment on the 911 engine has never been simpler, more accurate, or more repeatable. A precisely fabricated block of 6061 aluminum secures an oversized Starrett straight edge (included) to enable easy and exact measurements. No more guessing or settling for "close enough."
Includes custom caliper base, as well as thumb screws for mounting on all 911 engines including the 964.
SR026
Product Information
Product Information
Sprocket registration pin puller for Porsche 911

stomski

This unique tool allows you to easily pull the cam timing sprocket registration pin. No more yanking on the factory tool, hurting your fingers, or pulling the sprocket off the end of the cam shaft. Use this precisely machined slide hammer to delicately pull the pin.
9301055
Product Information
Product Information
Sprocket support for chain tensioner.

oematch

Fits:
Porsche 911 / 930 1980-89
Porsche 964 Turbo 3.3L 1991-92

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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9301055
16650
16651
93010550900
93010551000

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Special Order item
9301055
Product Information
Product Information
Sprocket support for chain tensioner.

porsche

Fits:
Porsche 911 / 930 1980-89
Porsche 964 Turbo 3.3L 1991-92

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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9301055
93010550900
93010551000

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93010551300/1
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Product Information
Tensioner spacer. Standard type not upgrade type.
Should be fitted with 93010505300 above.

oematch

Fits:
Porsche 911 1968-83
Porsche 930 Turbo

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93010551300
93010551300

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93010591
Product Information
Product Information
Update your early 911 1968-83 and 930.
These kits are for each side, Includes cam timing chain housing covers, oil lines, tensioner and other necessary fittings. Select Left or Right Side

Fits:
Porsche 911 2.7L / 3.0L
Porsche 930 3.0L / 3.3L Turbo


Important Note:
For early models with engines smaller than 2.7L (such as 2.2L or 2.4L), an additional pipe (Part No. 930107348XX) will be required. Furthermore, for pre-1980 models, a spacer may be necessary between the chain tensioner arm and the tensioner itself. Two spacers are needed—one for each side. You’ll have the option to include these items when adding this kit to your basket.



Related reference numbers
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93010591
93010591100
93010591200
930105912
930105911
93010591201
93010591101
93010551300

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911327339990
Product Information
Product Information
Timing chain split link.
To be used with Part Code: 91110552951 OR 91110552951/1


Need when fitting split timing chains. Each car has two.

Fits:
Porsche 911 1965 - 1989
Porsche 964 1990 - 1994



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911327339990
911327339990
90110553000
91110552951
91110552950

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Special Order item
90110505602
Product Information
Product Information
Timing chain sprocket pin.

porsche

Fits:
Porsche 911 / 912 / 930 1965-89
Porsche 964 3.3L 1990-92
Porsche 914-6 1970-76

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

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90110505602
90110505602
90110505601

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SR222
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Product Information
Timing chain strap / support for Porsche 911

stomski

When assembling the case halves on the 911 engine STOMSKI RACING's SR222 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 for all 911 engines
930105060S
Product Information
Product Information
Replacement tensioner support shaft located inside timing chain case. Position: Right.

oematch

Fits:
Porsche 911 1965-89
Porsche 930 Turbo 1978-79
Porsche 914 1970-71

Related reference numbers
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930105060S
93010506201
93010506102
930105060S

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DISPLAYING 17 to 30 (of 30 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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