Chains & Tensioners

Timing Chain Tensioner / Chain Adjuster. Standard type not the upgrade type.
The timing chain tensioner product code 930 105 053 04 is a precision-engineered, direct-fit replacement for the original mechanical tensioner used in early air-cooled Porsche 911 and 930 engines. Designed to maintain consistent chain tension, it effectively reduces slack, minimizes noise, and ensures precise valve timing under all driving conditions. Built to original Porsche specifications with durable materials and exact geometry, this OE Match unit delivers long-lasting reliability and prevents premature wear of the timing components.
Sold each. Fits Left or Right Side

Fits:
Porsche 911 1968 - 1983
Porsche 930 Turbo

Diagram ref no 10

•  Position: Mounted to the engine block in the timing chain system
•  Function: Acts as a spring-loaded or mechanical adjuster to eliminate chain slack, control vibration, and maintain chain alignment
•  Symptoms of Failure: Chain rattle, timing inaccuracy, engine noise
•  Benefits Prevents: chain slack, reduces wear, restores quiet and accurate timing performance
•  Installation: Direct-fit replacement – compatible with original guides and sprockets

A worn or failing chain tensioner can lead to chain slack, rattling noise, timing variation, and accelerated wear of chain guides, sprockets, or shafts.

Replace the tensioner when:
•  Rebuilding or disassembling the engine
•  Noticeable noise or slack in the timing chain
•  During preventive maintenance on high-mileage engines

Using high-precision replacement restores proper tension, reduces noise, and protects your timing system components.

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93010505304

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Chain wheel support guide rail.



Fits:
Porsche 911 1965-79
Porsche 911 Turbo 1975-77
Porsche 912 1965-69
Porsche 914-6 1970-76

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

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90110550602

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Mechanical chain tensioners, Set of 2 for Porsche 911



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

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Sprocket alignment tool for Porsche 911



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.

Sprocket registration pin puller for Porsche 911



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.

Tensioner spacer. Standard type not upgrade type.
Should be fitted with 93010505300 above.
The Genuine Porsche spacer sleeve is an original OEM component designed specifically for the timing chain tensioner assembly in Porsche 911 and 930 Turbo engines. It fits between the timing chain tensioner bracket and guide arm support, maintaining correct alignment and spacing in the factory timing drive geometry.

Fits:
Porsche 911 1968 - 1983
Porsche 930 Turbo

Diagram ref no 10A

• Position on Vehicle: Inside the front timing cover area – installed in the chain/guide/tensioner zone of the flat-six engine.

• Function: Ensures precise spacing in the timing chain tensioner assembly, guaranteeing correct chain tension, optimal performance and minimal noise.

• Specification: Manufactured by Porsche, dimensioned exactly to factory tolerance, with finish and fitment that matches original componentry.

While small in size, the spacer sleeve plays a crucial role in the timing drive system:
• A missing, worn or incorrect spacer can allow the tensioner or chain guide to offset, resulting in increased slack, audible chain noise, accelerated sprocket/rail wear, or worst-case timing failure.
• Incorrect spacing may alter chain path, affect sprocket alignment and shorten component life.
• During engine rebuilds or when the timing cover is removed, it's often overlooked - but renewing this part removes a weak link in the chain drive.

When and why to replace:
•  The timing chain is noisy (chain slap) or exhibits excess play.
•  Timing cover removed for service, tensioner replaced or guide rails changed.
•  Spacer appears damaged, bent, missing or shows visible wear marks.
•  You are performing a full timing system overhaul on your Porsche 911/930 and want all components at new-spec for reliability.

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93010551300

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Tensioner Spacer, Standard Type.

The OE Match Tensioner Spacer, Standard Type is a precision-engineered replacement component designed for use within the Porsche timing chain tensioner assembly. This spacer plays an important role in maintaining the correct positioning, alignment and operation of the chain tensioner system, helping to ensure consistent timing chain control and reliable engine performance.

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 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)  

Manufactured to OE specifications for accuracy, fit and durability, this standard-type tensioner spacer is designed to withstand the demanding operating conditions found within the engine timing system. It is an ideal replacement during timing chain service, tensioner repairs or complete engine rebuilds.

What This Product Does:  

• Maintains correct spacing and positioning within the timing chain tensioner assembly.
• Supports proper alignment of tensioner components.
• Helps ensure consistent timing chain tension.
• Contributes to smooth operation of the timing chain system.
• Reduces unnecessary wear on timing components.
• Supports accurate valve timing and engine performance.

Symptoms Of Wear Or Failure:

• Timing chain rattling or excessive chain noise.
• Inconsistent timing chain tension.
• Accelerated wear of tensioner components.
• Increased timing system vibration.
• Premature wear of timing chains and guide rails.
• Excessive movement within the tensioner assembly.
• Poor timing system performance during engine operation.
• Increased risk of timing-related component wear.

Why Replacement Matters:

• Although small in size, the tensioner spacer plays a critical role in maintaining the correct geometry and operation of the timing chain tensioner assembly. Continuous exposure to engine vibration, oil circulation, heat cycles and mechanical loads can contribute to wear over time, particularly during high-mileage use or engine rebuilds.
• A worn or incorrectly fitted spacer can affect tensioner alignment and chain control, potentially increasing wear on the timing chain, guide rails and tensioner components. Maintaining the integrity of every timing system component is essential for preserving accurate valve timing and long-term engine reliability.

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93010551300

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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.

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93010591

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Timing Chain Split Link.
The OE Match Timing Chain Split Link is a precision-engineered replacement connecting link designed for Porsche timing chain systems. This small but essential component joins the ends of the timing chain, allowing secure installation and reliable operation of the engine's valve timing mechanism.

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  

Manufactured to OE specifications for strength, fit and durability, the split link is designed to withstand the constant loads, temperatures and operating conditions found within the timing chain assembly. It provides a secure connection that helps maintain accurate timing chain operation and overall engine reliability.

What This Product Does:

• Connects and secures the ends of the engine timing chain.
• Allows installation or repair of the timing chain assembly.
• Maintains continuous timing chain operation.
• Supports accurate camshaft and crankshaft synchronisation.
• Helps ensure precise valve timing throughout the engine's operating range.
• Contributes to smooth engine performance and reliability.

Symptoms Of Wear Or Failure:

• Timing chain noise or rattling.
• Excessive timing chain slack.
• Visible wear or damage to the link components.
• Accelerated timing chain wear.
• Inconsistent engine timing.
• Reduced engine performance.
• Difficulty maintaining proper chain tension.
• Potential timing chain failure in severe cases.

Why Replacement Matters:

• The timing chain system is one of the most critical components within the engine, controlling the relationship between the crankshaft and camshafts. Although small, the split link plays a vital role in maintaining the integrity of the entire timing chain assembly.
• Over time, wear, corrosion, fatigue or damage during servicing can compromise the strength of the split link. A weakened or damaged link may accelerate chain wear or increase the risk of timing chain failure. Because timing-related failures can result in significant engine damage and costly repairs, replacing worn timing chain components during maintenance or engine rebuilds is highly recommended.

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911327339990

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Timing chain sprocket pin.



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

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Timing chain strap / support for Porsche 911



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

Replacement tensioner support shaft located inside timing chain case. Position: Right.



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

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930105060S

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