OE Match

Clutch Guide Tube.
The OE Match Clutch Guide Tube is a high-quality replacement transmission component designed to provide a smooth and accurately aligned guide surface for the clutch release bearing. Manufactured to OE specifications for fit, precision and durability, this guide tube plays a vital role in ensuring reliable clutch operation and smooth gear changes.  

Fits:

• 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  

Diagram Ref No 1

Mounted to the gearbox housing, the guide tube supports the movement of the clutch release bearing as the clutch pedal is operated. By maintaining correct alignment and reducing friction within the clutch release mechanism, the guide tube helps ensure consistent clutch engagement and disengagement while protecting surrounding clutch components from premature wear.  

What This Product Does:

• Provides a guide surface for the clutch release bearing.
• Maintains correct alignment of the clutch release mechanism.
• Supports smooth clutch engagement and disengagement.
• Reduces friction within the clutch operating system.
• Helps maintain consistent clutch pedal feel.
• Minimises wear on the release bearing assembly.
• Contributes to reliable gear changes and drivetrain performance.

Symptoms Of Wear Or Failure:

• Heavy, stiff or inconsistent clutch pedal operation.
• Difficulty engaging or selecting gears.
• Rough clutch engagement or disengagement.
• Squeaking, scraping or grinding noises during clutch operation.
• Premature wear of the clutch release bearing.
• Clutch release bearing sticking or binding.
• Poor clutch disengagement performance.
• Visible scoring, corrosion or wear on the guide tube during inspection.

Why Replacement Matters:

• The clutch guide tube is subjected to constant contact from the clutch release bearing every time the clutch pedal is pressed. Over time, friction, contamination and normal wear can cause the guide surface to become scored, worn or corroded, reducing the efficiency of the clutch release mechanism.
• A worn guide tube can increase stress on the clutch release bearing and other clutch components, resulting in poor clutch feel, difficult gear changes and accelerated wear throughout the clutch assembly. If left unresolved, excessive wear may contribute to premature failure of the release bearing and more extensive transmission repairs.
• Replacing a worn clutch guide tube restores smooth release bearing movement, improves clutch performance and helps protect associated clutch components from unnecessary wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring dependable clutch operation and preserving the driving characteristics of your Porsche.

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

91511608703

The product you are viewing cross references to these numbers

Clutch Guide Tube.
The OE Match Clutch Guide Tube is a high-quality replacement transmission component designed to provide a precise guide path for the clutch release bearing within the clutch operating system. Manufactured to OE specifications for fit, accuracy and durability, this guide tube ensures smooth and consistent movement of the release bearing during clutch engagement and disengagement.  

Fits:

Diagram Ref No 10

Installed on the gearbox housing, the guide tube supports and aligns the clutch release bearing as it travels along its operating path. Its precision-machined surface helps reduce friction, maintain correct bearing alignment and promote smooth clutch operation, making it an essential component for reliable transmission performance.  

What This Product Does:

• Provides a guide surface for the clutch release bearing.
• Maintains correct alignment of the clutch release mechanism.
• Supports smooth clutch engagement and disengagement.
• Reduces friction within the clutch operating system.
• Helps ensure consistent clutch pedal feel.
• Minimises wear on the release bearing assembly.
• Contributes to smooth gear changes and reliable drivetrain operation.

Symptoms Of Wear Or Failure:

• Stiff, heavy or inconsistent clutch pedal operation.
• Difficulty selecting or changing gears.
• Rough clutch engagement or disengagement.
• Squeaking, scraping or grinding noises during clutch operation.
• Premature wear of the clutch release bearing.
• Clutch release bearing sticking or binding.
• Poor clutch disengagement.
• Visible scoring, corrosion or wear on the guide tube during inspection.

Why Replacement Matters:

• The clutch guide tube is subjected to constant contact from the clutch release bearing every time the clutch pedal is operated. Over time, friction, contamination and normal wear can cause the guide surface to become scored, worn or corroded, reducing the smooth operation of the clutch release system.
• A worn guide tube can increase stress on the clutch release bearing and other clutch components, resulting in poor clutch feel, difficult gear changes and accelerated wear throughout the clutch assembly. If left unresolved, excessive wear may contribute to premature failure of the release bearing and additional transmission-related repairs.
• Replacing a worn clutch guide tube restores smooth release bearing movement, improves clutch performance and helps protect associated clutch components from unnecessary wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring dependable clutch operation and preserving the driving characteristics of your Porsche.

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

91511608704

The product you are viewing cross references to these numbers

Clutch Guide Tube.
The OE Match Clutch Guide Tube is a high-quality replacement transmission component designed to provide a smooth and accurate guide path for the clutch release bearing during clutch operation. Manufactured to OE specifications for fit, precision and durability, this guide tube plays a critical role in ensuring reliable clutch engagement and disengagement while reducing wear within the clutch release mechanism. 

Fits: 

Diagram Ref No 1

Mounted to the gearbox housing, the guide tube supports the clutch release bearing as it moves forward and backward during operation. Its precision-machined surface helps minimise friction and ensures the release bearing remains correctly aligned, contributing to smooth clutch performance and dependable gear changes.  

What This Product Does:

• Provides a guide surface for the clutch release bearing.
• Maintains correct alignment of the clutch release mechanism.
• Ensures smooth movement during clutch engagement and disengagement.
• Reduces friction within the clutch operating system.
• Supports consistent clutch pedal feel.
• Helps minimise wear on the release bearing assembly.
• Contributes to smooth gear changes and reliable transmission operation.

Symptoms Of Wear Or Failure:

• Stiff or inconsistent clutch pedal feel.
• Difficulty engaging or selecting gears.
• Rough or jerky clutch operation.
• Squeaking, scraping or grinding noises during clutch use.
• Premature wear of the clutch release bearing.
• Clutch release bearing binding or sticking.
• Poor clutch disengagement.
• Visible scoring, corrosion or wear on the guide tube during inspection.

Why Replacement Matters:

• The clutch guide tube is subjected to constant contact from the clutch release bearing every time the clutch pedal is operated. Over time, the guide surface can become worn, scored or corroded, increasing friction and reducing the smooth movement of the release bearing.
• A worn guide tube can accelerate wear of the clutch release bearing and other clutch components, leading to poor clutch performance, difficult gear changes and increased stress on the transmission. If left unresolved, excessive wear may contribute to premature failure of the clutch release system and more costly repairs.
• Replacing a worn clutch guide tube restores smooth release bearing operation, improves clutch performance and helps protect associated clutch components from unnecessary wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring reliable clutch operation and preserving the driving characteristics of your Porsche.

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

91111608700

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Clutch Guide Sleeve.
The OE Match Clutch Guide Sleeve is a high-quality replacement transmission component designed to provide a precise guiding surface for the clutch release bearing within the clutch operating system. Manufactured to OE specifications for fit, strength and durability, this guide sleeve ensures smooth and accurate movement of the release bearing during clutch engagement and disengagement.  

Fits:

• Porsche 964 (911) RS 3.6L 1991-93
• Porsche 964 (911) RS 3.8L 1991-93
• Porsche 993 (911) RS 1994-97
• Porsche 996 GT3 RS 2003-04  

Diagram Ref No 5

Mounted to the transmission housing, the guide sleeve supports the release bearing as it travels along its operating path, helping to minimise friction and maintain consistent clutch operation. Precision manufacturing ensures reliable performance, smooth gear changes and long-term durability under demanding driving conditions.  

What This Product Does:

• Provides a smooth guide surface for the clutch release bearing.
• Ensures accurate movement of the clutch release mechanism.
• Supports smooth clutch engagement and disengagement.
• Reduces friction within the clutch operating system.
• Helps maintain consistent clutch pedal feel.
• Minimises wear on the release bearing assembly.
• Contributes to smooth gear changes and drivetrain performance.

Symptoms Of Wear Or Failure:

• Stiff or inconsistent clutch pedal operation.
• Difficulty selecting gears.
• Rough or jerky clutch engagement.
• Squeaking, scraping or grinding noises when operating the clutch.
• Excessive wear of the clutch release bearing.
• Poor clutch pedal feel.
• Binding or sticking within the clutch release mechanism.
• Visible scoring, wear or corrosion on the guide sleeve during inspection.

Why Replacement Matters:

• The clutch guide sleeve is subjected to continual contact and movement from the release bearing every time the clutch pedal is pressed. Over time, the guide surface can become worn, scored or corroded, increasing friction and reducing the smooth operation of the clutch release system.
• A worn guide sleeve can accelerate wear of the clutch release bearing and other clutch components, leading to poor clutch performance, difficult gear changes and increased strain on the transmission. If left unresolved, excessive wear may contribute to premature failure of associated clutch components and more costly repairs.
• Replacing a worn clutch guide sleeve restores smooth release bearing movement, improves clutch operation and helps protect surrounding clutch system components from premature wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring reliable clutch performance and preserving the driving characteristics of your Porsche.

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

95011681330

The product you are viewing cross references to these numbers

Clutch Guide Sleeve.
The OE Match Clutch Guide Sleeve is a high-quality replacement transmission component designed to provide a smooth and precise guide surface for the clutch release bearing during clutch operation. Manufactured to OE specifications for fit, accuracy and durability, this guide sleeve plays a critical role in ensuring reliable clutch engagement and disengagement.  

Fits:

• Porsche 911 1987-1989 3.2L G50
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• 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) 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
• Porsche 996 TURBO 2000-05
• Porsche 996 GT3 RS 2003-04
• Porsche 997 MK1 GT3 / GT3 RS 2007-09  

Diagram Ref No 5

Installed on the gearbox housing, the guide sleeve allows the clutch release bearing to move smoothly and accurately when the clutch pedal is operated. Precision machining and robust construction help minimise friction, reduce wear and maintain consistent clutch performance under all driving conditions.  

What This Product Does:

• Provides a guide surface for the clutch release bearing.
• Ensures smooth movement of the release bearing during clutch operation.
• Supports accurate clutch engagement and disengagement.
• Reduces friction within the clutch release mechanism.
• Helps maintain consistent clutch pedal feel.
• Minimises wear on the release bearing assembly.
• Contributes to smooth gear changes and drivetrain operation.

Symptoms Of Wear Or Failure:

• Stiff or inconsistent clutch pedal operation.
• Difficulty engaging or disengaging gears.
• Clutch judder or rough clutch engagement.
• Squeaking, scraping or grinding noises during clutch operation.
• Excessive wear of the clutch release bearing.
• Poor clutch pedal feel.
• Binding or sticking within the clutch release mechanism.
• Visible scoring, wear or corrosion on the guide sleeve during inspection.

Why Replacement Matters:

• The clutch guide sleeve is subjected to constant movement and contact from the clutch release bearing every time the clutch pedal is operated. Over time, the sleeve can become worn, scored, corroded or damaged, increasing friction and reducing the smooth operation of the clutch release system.
• A worn guide sleeve can accelerate wear of the clutch release bearing and other clutch components, potentially leading to poor clutch performance, difficult gear changes and increased drivetrain wear. If left unresolved, excessive wear may contribute to premature clutch system failure and costly repairs.
• Replacing a worn clutch guide sleeve restores smooth release bearing movement, improves clutch operation and helps protect associated clutch components from premature wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring reliable clutch performance and preserving the driving characteristics of your Porsche.

Related reference numbers
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95011681307

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Sticker, Engine Oil Level.
The OE Match Engine Oil Level Sticker is a high-quality replacement informational decal designed to provide factory-correct engine oil level checking instructions and reference information within the engine compartment. Manufactured to OE specifications for appearance, dimensions and durability, this sticker helps ensure owners and technicians can accurately monitor and maintain proper engine oil levels.  

Fits:

Produced using durable, heat-resistant materials, the decal is designed to withstand the demanding conditions of the engine bay, including exposure to temperature fluctuations, moisture and cleaning products. It is an ideal replacement for faded, damaged or missing original stickers and is particularly valuable for restoration and preservation projects.  

What This Product Does:

• Displays factory engine oil level checking information.
• Provides a clear reference for routine maintenance procedures.
• Assists technicians and owners during oil level inspections.
• Helps promote correct engine oil maintenance practices.
• Restores original engine bay appearance.
• Supports authenticity during restoration projects.
• Preserves important factory service information.

Symptoms Of Wear Or Failure:

• Faded or illegible text and graphics.
• Missing sticker from the engine compartment.
• Cracked, peeling or damaged decal surface.
• Discolouration caused by age, heat or cleaning products.
• Difficulty identifying factory oil level checking instructions.
• Reduced originality within the engine bay.
• Missing maintenance reference information during servicing.

Why Replacement Matters:

• Engine compartment stickers are exposed to constant heat, moisture, cleaning chemicals and environmental ageing. Over time, the printed information can fade, crack or become unreadable, making it difficult to reference factory maintenance guidance.
• Although a missing oil level sticker does not directly affect engine operation, it can reduce the accessibility of important maintenance information and detract from the originality of the vehicle. For restoration projects, concours vehicles and enthusiasts seeking factory-correct presentation, replacing worn decals is an important finishing detail.
• Replacing a damaged or missing engine oil level sticker restores vital factory reference information, improves engine bay presentation and helps maintain vehicle authenticity. An OE Match replacement provides factory-style appearance, accurate reproduction and durable construction, making it ideal for restoration, maintenance and preservation of your Porsche.

Related reference numbers
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91100650400

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Sticker Ignition Timing.
The OE Match Ignition Timing Sticker is a high-quality replacement engine information decal designed to display the factory-specified ignition timing settings and service information for applicable Porsche models. Manufactured to OE specifications for appearance, size and durability, this sticker provides a clear reference point for technicians when performing ignition system adjustments and engine tuning procedures.  

Fits:

Produced using durable materials resistant to heat, moisture and engine bay conditions, the ignition timing sticker helps preserve important factory information and contributes to accurate maintenance and restoration work. It is particularly valuable for classic Porsche vehicles where originality and correct engine specifications are important.  

What This Product Does:

• Displays factory ignition timing specifications.
• Provides a reference for engine tuning and servicing.
• Assists technicians during ignition timing adjustments.
• Helps ensure correct engine setup and maintenance procedures.
• Restores original engine bay appearance.
• Supports authenticity during vehicle restoration projects.
• Preserves important factory service information.

Symptoms Of Wear Or Failure:

• Faded or illegible printed information.
• Missing sticker from the engine compartment.
• Cracked, peeling or damaged decal surface.
• Discolouration caused by age or heat exposure.
• Difficulty identifying correct ignition timing specifications.
• Reduced originality within a restored engine bay.
• Missing factory reference information during servicing.

Why Replacement Matters:

• Ignition timing stickers are exposed to engine bay heat, moisture, cleaning chemicals and environmental ageing. Over time, the printed information can fade or become unreadable, making it difficult to reference factory timing specifications during maintenance and adjustment procedures.
• A missing or damaged sticker may not affect the mechanical operation of the vehicle directly, but it can create uncertainty during servicing and detract from the originality of the engine compartment. For restoration projects and concours-level vehicles, maintaining correct factory markings is often an important part of preserving authenticity and value.
• Replacing a worn or missing ignition timing sticker restores important factory reference information, enhances engine bay presentation and helps maintain originality. An OE Match replacement provides factory-style appearance, accurate reproduction and durable construction, making it an ideal solution for maintenance, restoration and preservation of your Porsche.

Related reference numbers
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90100651002

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Pedal rubber accelerator
This OE match accelerator pedal rubber is a direct replacement for the original Porsche component fitted to early 911 and 914 models. It forms the contact surface between the driver’s foot and the accelerator pedal.

Fits:
Porsche 911 1965 - 1976
Porsche 914 1970 - 1976

Installed as part of the accelerator pedal assembly, it restores both functionality and the original driving feel expected from classic Porsche vehicles. It is particularly important for maintaining correct pedal response and driver control.

This pedal rubber provides a non-slip surface for the driver’s foot, allowing precise control of throttle input. It ensures smooth acceleration and improved driving safety by maintaining consistent pedal grip and responsiveness.

Function
• Provides grip for accelerator pedal operation
• Transfers driver input to throttle system
•  Ensures smooth and controlled acceleration
•  Reduces foot slippage during driving
•  Withstands repeated use and heat exposure

Over time, pedal rubber can wear down, harden, or become slippery, reducing control and comfort. A worn pedal may lead to inconsistent throttle response or reduced driver confidence. Replacing it restores proper grip, improves driving precision, and maintains the original feel of the vehicle.

When to Replace
•  Rubber is worn smooth or slippery
•  Visible cracking or deterioration
•  Reduced grip during acceleration
•  Pedal feels loose or uneven underfoot
•  During interior restoration or pedal overhaul

Related reference numbers
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90142301001

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Pedal rubber accelerator.
The accelerator pedal (or pedal pad/cover assembly) is designed to replicate the original pedal used on Porsche 911 (G-series) and Porsche 928 models. Built to match Porsche’s original specifications, this pedal delivers correct ergonomics, reliable mounting, secure grip and direct-fit installation.

Fits:
Porsche 911 1977 - 1989
Porsche 928 1978 - 1995 all models

Diagram ref no 1

• Position on Vehicle: Driver’s footwell -  accelerator pedal connecting to throttle linkage or cable (depending on spec), mounted in the footwell pedal cluster (alongside brake and clutch pedals).

• Function: Provides the interface between driver and throttle - allows foot control of engine throttle, enabling acceleration; ensures stable, correct pedal travel, grip, positioning and control feedback for safe, responsive driving.

• Applications: Ideal when the original pedal is worn, bent, missing, rubber pad degraded or if restoring a classic Porsche to correct interior spec. Also suited for owners seeking reliable, direct-fit replacement without modification.

Over time, the accelerator pedal assembly can suffer from wear, corrosion, pad deterioration or damage - leading to:
• Slippery or degraded pedal surface, risking foot slip under acceleration
• Inconsistent throttle control or poor feedback
• Altered pedal geometry affecting ergonomics and comfort
• Safety issues in slippery or demanding driving conditions

Replacing a pedal ensures secure foot contact, original pedal feel, safe throttle control and preserves the authenticity of your classic Porsche’s driving dynamics.

When to replace:
• The original pedal pad is worn, cracked or missing
• Pedal arm is bent, loose or shows signs of corrosion
• Pedal cluster refurbishment or interior restoration is being carried out
• You are reinstalling or repairing the throttle linkages and want all components fresh for reliability

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91142311102

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Needle roller bearing.
This  needle roller bearing, also known as a needle cage bearing, is used in the Porsche 915 type manual transmission. In the gearbox, needle roller bearings support and permit rotation of internal components by minimizing friction between moving parts.

Fits:
Porsche 911 1974 - 1986 4 & 5 speed

Diagram Ref no 7.

This OE Match version meets original specification dimensions and tolerances to ensure proper fit and function when replacing worn or damaged bearings.

The needle roller bearing provides smooth rotational support for transmission shafts and gears. It helps reduce friction and wear between the main shaft and the transmission housing or gear assemblies, allowing gearsets to spin freely and reliably under load. This results in consistent gear engagement, reduced drivetrain stress, and a smoother shifting experience.

Function
• Friction Reduction: Needle rollers reduce surface contact friction between rotating components.
• Load Handling: Supports radial loads within the transmission at critical gear positions.
• Smooth Operation: Promotes precise and efficient gear movement with minimal resistance.
• Long Service Life: Engineered to resist wear and maintain structural integrity under continued transmission stresses.

Over time, the original needle roller bearings can become worn, leading to increased friction, gear noise, and premature wear of transmission components. A failing bearing may cause rough shifting, gear chatter, or accelerated gearbox wear. Replacing the worn bearing with an OE Match part ensures proper internal support, restores smooth gearbox operation, and helps protect more expensive transmission components from damage.

Replace this bearing if you notice:
•  Unusual gearbox noise, especially when changing gears
•  Rough or notchy shifting feel
•  Vibration or unusual resonance from the transmission
•  Sluggish gear engagement
•  During full gearbox rebuild or overhaul

Related reference numbers
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99920147000

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3rd / 4th Gear Dog Teeth 

Restore precise shifting performance and gearbox reliability with this OE Match 3rd / 4th Gear Dog Teeth Ring designed for Porsche 911 Turbo (930) models produced between 1975 and 1988. As a vital component within the synchroniser assembly, the dog teeth ring allows smooth engagement of 3rd and 4th gears, helping maintain the crisp shifting characteristics expected from the legendary Porsche Turbo transmission.

Fits:

• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1988 3.3L Turbo (930)

Diagram Ref no 32 & 34

Manufactured to OE specifications, this replacement dog teeth ring provides accurate machining, correct tooth geometry and exceptional durability for transmission rebuilds, restorations and performance maintenance. Whether you're rebuilding a worn gearbox or restoring a classic Porsche 930 to factory standards, replacing worn dog teeth is essential for preserving smooth gear selection and transmission longevity.

What Do 3rd / 4th Gear Dog Teeth Do?

The dog teeth ring forms an integral part of the Porsche 930 synchroniser assembly. Mounted to the gear, it provides the engagement interface between the gear and the synchroniser operating sleeve.

During a gear change, the synchroniser system matches rotational speeds between components before the operating sleeve engages the dog teeth, locking the selected gear to the shaft and transmitting engine power through the transmission.

The dog teeth help:

• Enable smooth engagement of 3rd and 4th gears.
• Provide positive gear locking during operation.
• Reduce gear clash during shifting.
• Improve gear change precision.
• Support synchroniser operation.
• Maintain reliable gearbox performance under load.

Properly functioning dog teeth are essential for preserving the smooth shift quality and driving enjoyment of the Porsche 930 transmission.

Why Do 3rd / 4th Gear Dog Teeth Fail?

Over time, repeated gear changes gradually wear the engagement surfaces of the dog teeth. As wear increases, gear engagement quality deteriorates and additional stress is placed on the synchroniser assembly.

Common causes of failure include:

• High mileage wear.
• Aggressive driving and fast shifting.
• Worn synchroniser rings.
• Gear grinding during engagement.
• Contaminated gearbox oil.
• Inadequate transmission maintenance.
• Excessive drivetrain loads from turbocharged performance.
• Age-related metal fatigue.

Third and fourth gears often see frequent use during normal road driving and higher-speed operation, making their synchroniser components susceptible to long-term wear.

When Should 3rd / 4th Gear Dog Teeth Be Replaced?

Dog teeth should be inspected whenever the gearbox is dismantled or rebuilt. Replacement is recommended if you experience:

• Difficulty engaging 3rd or 4th gear.
• Gear crunching or grinding during shifts.
• Rounded, hooked or worn engagement teeth.
• Excessive synchroniser wear.
• Poor shift quality.
• Visible damage or chipping.
• Transmission rebuild requirements.

Most Porsche transmission specialists replace worn dog teeth alongside synchroniser rings, guide hubs and operating sleeves during gearbox overhauls to ensure optimal shifting performance.

Related reference numbers
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93030224300

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2nd Gear Dog Teeth

Restore precise gear engagement and transmission performance with this OE Match 2nd Gear Dog Teeth Ring designed for Porsche 911 turbo (930) models produced between 1977 and 1988. As a critical component of the synchroniser assembly, the dog teeth ring allows smooth and reliable engagement of 2nd gear, helping maintain the shifting quality and driving characteristics expected from the legendary Porsche Turbo drivetrain.

Fits:

• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1988 3.3L Turbo (930)

Diagram Ref no 35

Manufactured to OE specifications, this replacement dog teeth ring delivers precise machining, excellent durability and factory-correct fitment. Whether you're rebuilding a Porsche 930 gearbox, addressing synchroniser wear or carrying out a full transmission restoration, replacing worn dog teeth is essential for achieving smooth gear changes and long-term gearbox reliability.

What Do 2nd Gear Dog Teeth Do?

The dog teeth ring is mounted directly to the gear and forms an essential part of the Porsche 930 synchroniser system. During a gear change, the synchroniser assembly matches the rotational speed of the selected gear before the operating sleeve engages the dog teeth to lock the gear to the shaft.

The dog teeth perform several vital functions:

• Enable smooth engagement of 2nd gear.
• Provide the engagement surface for the operating sleeve.
• Help synchronise gear speeds during shifting.
• Reduce gear clash and transmission wear.
• Maintain precise gear selection.
• Support reliable gearbox operation under load.

In the high-torque Porsche 930 transmission, properly functioning dog teeth are critical for maintaining shift quality and preventing excessive wear to other synchroniser components.

Why Do 2nd Gear Dog Teeth Fail?

Dog teeth are subjected to repeated impact loads during every gear change. Over time, wear gradually alters the shape of the engagement teeth, reducing their effectiveness and causing shifting issues.

Common causes of failure include:

• High mileage transmission wear.
• Aggressive shifting and rapid gear changes.
• Worn synchroniser rings.
• Poor gearbox lubrication.
• Contaminated transmission oil.
• Excessive drivetrain loading.
• Gear grinding during engagement.
• Age-related wear and fatigue.

Second gear is one of the most frequently used gears during normal driving, making its synchroniser and dog teeth assembly particularly vulnerable to long-term wear.

When Should 2nd Gear Dog Teeth Be Replaced?

The dog teeth ring should always be inspected whenever the gearbox is dismantled. Replacement is recommended if you notice:

• Difficulty engaging 2nd gear.
• Crunching or grinding during shifts.
• Rounded or hooked engagement teeth.
• Gear engagement becoming increasingly notchy.
• Visible wear, chipping or damage.
• Excessive synchroniser wear.
• Transmission rebuild requirements.

Most Porsche gearbox specialists recommend replacing worn dog teeth during transmission overhauls to restore smooth shifting and protect other synchroniser components from premature wear.

Related reference numbers
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93030224200

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Dog Teeth 1st Gear (Asymmetrical Teeth) 

Restore crisp gear engagement and transmission performance with this OE Match 1st Gear Dog Teeth Ring, designed for Porsche 911 turbo (930) models produced between 1977 and 1988. Featuring the correct asymmetrical tooth profile used in the Porsche 930 gearbox, this critical synchroniser component plays a key role in ensuring smooth and reliable engagement of 1st gear.

Fits:

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

Diagram Ref no 48

Manufactured to OE specifications, this replacement dog teeth ring delivers precise machining, correct fitment and long-lasting durability for gearbox rebuilds, restorations and transmission repairs. Whether you're addressing difficult gear engagement, gearbox wear or carrying out a complete transmission overhaul, replacing worn dog teeth is essential for restoring proper shift quality.

What Do 1st Gear Dog Teeth Do?

The dog teeth ring is a fundamental part of the synchroniser assembly within the Porsche 930 gearbox. Mounted to the gear itself, the dog teeth provide the engagement surface that allows the synchroniser operating sleeve to lock the selected gear to the shaft during a gear change.

Working together with the synchroniser ring, guide hub and operating sleeve, the dog teeth help:

• Enable smooth gear engagement.
• Synchronise gear speeds before engagement.
• Reduce gear clash during shifting.
• Securely lock 1st gear into operation.
• Improve gearbox performance and shift quality.
• Support reliable transmission operation.

The asymmetrical tooth design used in many Porsche 930 gearbox applications was engineered to improve engagement characteristics and durability under the increased torque loads generated by the turbocharged engine.

Why Do Dog Teeth Fail?

Dog teeth are subjected to repeated mechanical impact every time a gear change is performed. Over time, wear gradually alters the tooth profile, reducing engagement quality and increasing synchroniser stress.

Common causes of failure include:

• High mileage gearbox wear.
• Aggressive shifting techniques.
• Repeated poor gear engagement.
• Worn synchroniser rings.
• Transmission oil contamination.
• Excessive gearbox loading.
• Age-related wear and fatigue.
• Incorrect gearbox setup during previous repairs.

First gear dog teeth are particularly susceptible to wear because they experience frequent engagement from stationary starts and low-speed driving.

When Should 1st Gear Dog Teeth Be Replaced?

Dog teeth should always be carefully inspected whenever the gearbox is dismantled. Replacement is recommended if you notice:

• Difficulty engaging 1st gear.
• Gear crunching during shifts.
• Jumping out of gear.
• Rounded or hooked tooth profiles.
• Excessive wear on synchroniser components.
• Poor shift quality.
• Visible damage or chipping.

During a professional Porsche 930 gearbox rebuild, worn dog teeth are commonly replaced alongside synchroniser rings, guide hubs and operating sleeves to restore factory shift performance.

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93030224102

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Synchro Guide Hub 91530240102 1st/2nd Gear – 915 Gearbox

Restore the crisp shifting performance of your classic Porsche 911 with this OE Match Synchro Guide Hub. Designed specifically for Porsche 911 models fitted with the legendary 915 gearbox between 1974 and 1986, this precision-engineered component forms a critical part of the 1st and 2nd gear synchroniser assembly, helping to ensure smooth gear engagement and reliable transmission operation.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L

Diagram Ref no 41

Manufactured to OE specifications, this replacement synchro guide hub delivers the correct fit, strength and dimensional accuracy required for professional gearbox rebuilds and classic Porsche restorations. Whether you're addressing worn synchroniser components, improving shift quality or carrying out a complete transmission overhaul, replacing worn guide hubs helps restore factory gear change performance.

What Does the 1st/2nd Gear Synchro Guide Hub Do?

The synchro guide hub is a central component within the Porsche 915 gearbox synchroniser assembly. Located between 1st and 2nd gears, it provides the mounting and guidance structure for the synchroniser mechanism and works in conjunction with the operating sleeve, synchro rings, brake bands and anchor blocks.

Its primary function is to facilitate smooth gear engagement by helping synchronise the rotational speeds of the gears before they lock together.

The guide hub helps:

• Support the synchroniser assembly.
• Control movement of the operating sleeve.
• Facilitate smooth 1st and 2nd gear engagement.
• Reduce gear clash during shifting.
• Maintain accurate gear selection.
• Improve overall gearbox operation and shift quality.

A properly functioning guide hub is essential for preserving the characteristic feel and reliability of the Porsche 915 transmission.

Why Do Synchro Guide Hubs Fail?

Over decades of service, synchroniser components are subjected to constant mechanical stress and repeated gear changes. Wear and fatigue can gradually affect the guide hub and surrounding synchroniser parts.

Common causes of failure include:

• High mileage wear.
• Aggressive shifting habits.
• Repeated gear engagement stress.
• Excessive synchroniser wear.
• Poor gearbox lubrication.
• Contaminated transmission oil.
• Metal fatigue over time.
• Damage during previous gearbox repairs.

Because 1st and 2nd gears are often the most frequently used ratios, the synchroniser assembly in this area of the gearbox is commonly one of the first sections to show wear.

When Should a Synchro Guide Hub Be Replaced?

The synchro guide hub should be inspected whenever the gearbox is dismantled or rebuilt. Replacement is recommended if you experience:
Difficulty engaging 1st or 2nd gear.

• Gear crunching during shifts.
• Notchy gear changes.
• Excessive transmission wear.
• Visible scoring, cracking or damage.
• Worn synchroniser assemblies.
• Poor shift quality despite replacing synchro rings.

Most Porsche transmission specialists recommend replacing worn synchroniser components during a gearbox overhaul to ensure consistent performance and maximise gearbox longevity.

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

91530240102

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Needle bearing (open) bush.
Built to OEM standards, it fits directly into the clutch release lever to provide friction-free, precise clutch engagement — restoring the feel and performance of your Porsche’s original setup. 
Sold each.

Fits:
Porsche 924 Turbo 1976 - 1985
Porsche 924S 1986 - 1988
Porsche 944 1982 - 1991
Porsche 968 1992 - 1995

Diagram Ref No 15.

•  Location: Inside the clutch release lever, mounted on the clutch release cross shaft.
•  Function: Supports the lever’s rotational movement, providing smooth, friction-free clutch actuation.
•  Position: Transmission housing area (bellhousing).

Over time, clutch pivot bearings experience wear due to constant motion, heat, and clutch actuation load. A worn or seized bearing can cause:
•  Stiff or inconsistent clutch pedal feel
•  Clutch disengagement issues or noise
•  Accelerated wear of the release lever or shaft

Recommended replacement:
•  During clutch or gearbox overhaul
•  Whenever the release lever is removed or serviced
•  If clutch pedal effort increases or lever play is excessive.

Replacing with an OE Match needle bearing restores factory-smooth clutch action and long-term reliability.

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

99920121300

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Synchro Guide Sleeve 3rd/4th Gear – 915 Gearbox

Restore the precise shifting performance of your classic Porsche 911 with this OE Match 3rd/4th Gear Synchro Guide Sleeve, designed specifically for Porsche 911 models equipped with the renowned 915 gearbox between 1974 and 1986. As a critical component within the synchroniser assembly, the guide sleeve helps ensure smooth gear engagement and accurate gear selection between third and fourth gears.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L

Diagram Ref no 12

Manufactured to OE specifications, this replacement synchro guide sleeve provides the correct fit, machining accuracy and durability required for Porsche transmission rebuilds and restorations. Whether you are addressing gear selection issues, carrying out a gearbox overhaul or restoring a classic air-cooled 911, replacing worn synchroniser components is essential for maintaining smooth and reliable gear changes.

What Does the 3rd/4th Gear Synchro Guide Sleeve Do?

The synchro guide sleeve is a vital component within the Porsche 915 gearbox synchroniser assembly. It works alongside the synchroniser rings, brake bands, anchor blocks and operating sleeves to allow gears to engage smoothly and without excessive wear.

When a gear change is made, the guide sleeve helps control the movement of the synchroniser mechanism, ensuring rotational speeds between gears are matched before engagement occurs.

The guide sleeve performs several important functions:

• Guides synchroniser operation during gear changes.
• Supports smooth engagement of 3rd and 4th gears.
• Helps synchronise gear speeds before engagement.
• Reduces gear clash and transmission wear.
• Maintains precise gear selection.
• Contributes to the distinctive shifting feel of the Porsche 915 gearbox.

Without a properly functioning guide sleeve, gear engagement quality can deteriorate significantly.

Why Do Synchro Guide Sleeves Fail?

The synchroniser system experiences constant mechanical loading during every gear change. Over time, wear and fatigue can affect the guide sleeve and associated synchroniser components.

Common causes of failure include:

• Wear from repeated shifting cycles.
• Metal fatigue over high mileage.
• Poor lubrication caused by contaminated gearbox oil.
• Aggressive or incorrect shifting techniques.
• Excessive wear in synchroniser assemblies.
• Gearbox overheating.
• General age-related component deterioration.

As many Porsche 911 models equipped with the 915 transmission are now several decades old, wear within the synchroniser system is extremely common and often contributes to poor shift quality.

When Should a Synchro Guide Sleeve Be Replaced?

The synchro guide sleeve should be carefully inspected whenever the gearbox is dismantled. Replacement is recommended if you experience:
Difficulty selecting 3rd or 4th gear.

• Gear crunching during shifts.
• Notchy or inconsistent gear engagement.
• Gearbox rebuild requirements.
• Excessive wear on synchroniser components.
• Visible scoring, damage or distortion.
• Transmission noise associated with worn synchroniser assemblies.

Most transmission specialists recommend replacing worn synchroniser components during a gearbox overhaul to restore optimal shift quality and prevent premature future wear.

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

91130240222

The product you are viewing cross references to these numbers