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- 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 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
This product is a complete OE Match flywheel bolt set consisting of 9 high-strength bolts used to secure a single-mass flywheel to the crankshaft on selected Porsche performance and motorsport models. The bolts are manufactured to match the original Porsche specification for thread pitch, length, and clamping force.
SET OF 9
Fits:
Porsche 928 1978 - 1995
Porsche 964 Carrera RS 1991 - 1994
Porsche 993 Carrera RS Clubsport 1995 - 1996
Porsche 996 GT3 1999 - 2001 - With PR 002 / 003*
Porsche 996 GT3 RS 2003 - 2005
Porsche 997 GT3 RS 2007 - 2011
Porsche 997-2 GT2 RS 2010
Diagram ref no 28
This bolt set secures the flywheel to the crankshaft, maintaining precise alignment between the engine and clutch assembly. Correct clamping force ensures smooth power transfer, stable clutch engagement, and protection of the crankshaft and flywheel mating surfaces.
Function: Installed through the flywheel into the crankshaft flange, each bolt is torqued to specification to provide uniform clamping pressure. Working together as a set, the bolts resist rotational forces generated by engine torque and clutch engagement, helping maintain drivetrain stability and preventing loosening under high-RPM and high-load conditions.
Flywheel bolts are subject to extreme mechanical stress and may stretch or fatigue after removal or repeated torque cycles. Reusing old bolts can compromise clamping force, leading to flywheel movement, vibration, clutch issues, or damage to the crankshaft flange. Replacing them with a new OE Match bolt set ensures reliable torque retention and protects high-value drivetrain components.
When to replace:
• During clutch or flywheel replacement
• When converting to or servicing a single-mass flywheel
• During engine rebuild or rear main seal service
• If original bolts show stretching, corrosion, or thread damage
• When Porsche service procedures specify new bolts on reassembly
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810215102
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 993 (911) RS 1994-97
The clutch bolt provides the critical clamp load needed to fasten the pressure plate securely to the flywheel. Proper clamping ensures even pressure across the friction surfaces, allowing the clutch to engage and disengage smoothly with consistent torque transfer from the engine to the transmission. Without secure, reliable hardware, clutch performance can be compromised, leading to slippage, vibration, or premature wear.
Sold each, 9 required per vehicle.
Fits:
Porsche 964 Carrera RS 3.6L 1992
Porsche 993 Carrera RS 3.75L 1995 - 1996
Diagram ref no 3
Installed through the clutch pressure plate into the flywheel flange, this bolt holds heavy rotating masses together under extreme dynamic forces. It is engineered to handle the stress of high RPMs, heat cycles, and robust power delivery typical of RS-spec engines while maintaining thread integrity and torque clamping force over time.
• OE Match thread, length, and tensile strength
• Direct replacement - no modifications needed
• Designed to work with original flywheel and pressure plate components
Clutch bolts are subject to repeated torque cycles, heat, vibration, and shearing forces. Over time, they can stretch, loosen, corrode, or develop compromised threads. Reusing old or damaged bolts increases the risk of uneven pressure distribution, which can lead to slipping, noises, or even component failure. High-quality bolts restore correct clamping force and help ensure dependable clutch performance and long service life.
When to replace:
• During clutch replacement or overhaul
• After transmission removal or major engine work
• If bolts show thread damage, corrosion, or existing fatigue
• When original bolts are lost or hardware has been reused previously
• Preventive replacement on restored or high-performance engines
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90006710301
The product you are viewing cross references to these numbers
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 993 (911) RS 1994-97

Fits:
Porsche 993 Carrera RS 3.75L 1995-96
Porsche 964 Carrera RS 3.6L 1992
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90006710301
The product you are viewing cross references to these numbers
- 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 MKI 1999-02
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Sold individually; x9 required per vehicle.
Fits:
Porsche 928 1978-95
Porsche 964 Carrera RS 1991-94
Porsche 993 Carrera RS Clubsport 1995-96
Porsche 996 GT3 1999-01 - With PR 002 / 003*
Porsche 996 GT3 RS 2003-05
Porsche 997 GT3 RS 2007-11
Porsche 997-2 GT2 RS 2010
*PR 002 - 911 Carrera RS Road Version
*PR 003 - 911 Carrera RS Clubsport
Diagram ref. 24.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810215102
The product you are viewing cross references to these numbers
- 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 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
OE Match flywheel retaining bolt used to secure a single-mass flywheel to the crankshaft. With an M10×1.25 thread and 24mm length, it’s engineered to deliver the correct clamp force to keep the flywheel securely mounted under extreme torsional loads, rapid RPM changes, and repeated heat cycles.
Sold each, 9 required per vehicle.
Fits:
Porsche 928 1978 - 1995
Porsche 964 Carrera RS 1991 - 1994
Porsche 993 Carrera RS Clubsport 1995 - 1996
Porsche 996 GT3 1999 - 2001 - With PR 002 / 003*
Porsche 996 GT3 RS 2003 - 2005
Porsche 997 GT3 RS 2007 - 2011
Porsche 997-2 GT2 RS 2010
Diagram ref no 4
Correct flywheel bolts are critical because they maintain the integrity of the crank-to-flywheel joint - supporting smooth power transfer, stable clutch operation, and long-term reliability. This OE Match version is designed for direct replacement during clutch/flywheel service and engine rebuild work.
Function: These bolts thread into the crankshaft flange and clamp the flywheel in place, ensuring accurate alignment and a secure interface between engine and clutch assembly. Proper bolt specification supports consistent torque retention and helps protect the flywheel, crank flange, and clutch components from vibration-related wear.
Flywheel bolts operate under high stress and can fatigue, stretch, or lose torque retention after removal and re-torque cycles. Replacing them with correct OE Match bolts helps ensure proper clamp load, reduces the risk of loosening, and protects expensive components from damage caused by flywheel movement.
When to replace:
• During clutch replacement or flywheel removal
• During engine rebuilds or rear main seal work requiring flywheel removal
• If bolts show thread damage, corrosion, or signs of stretching
• When service procedure specifies new bolts on reassembly
• Any time correct torque cannot be reliably achieved
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810215102
The product you are viewing cross references to these numbers
Porsche Clutch Bolts | Secure Power Transfer with Precision Engineering
Clutch bolts are essential fasteners that secure the clutch assembly to the flywheel, ensuring precise alignment and stable power transfer within your Porsche’s drivetrain. These high-tensile components are engineered to withstand extreme torque, vibration, and heat — keeping your clutch system firmly in place during high-performance driving.
At Design911, we supply premium-quality Porsche clutch bolts and fixing kits designed to meet or exceed original performance standards. Manufactured from hardened steel or high-grade alloy, each bolt set offers exact fitment, consistent torque strength, and long-lasting durability for both manual and semi-automatic transmissions.
Whether you’re replacing worn hardware during a clutch change or upgrading for track use, our clutch bolts guarantee secure engagement, reduced vibration, and optimal drivetrain reliability across all Porsche models.
What Do Clutch Bolts Do?
Clutch bolts fasten the clutch pressure plate to the flywheel, ensuring the entire clutch assembly operates as one balanced unit.
Core Functions:
- Securely
connect the clutch to the flywheel and crankshaft.
- Maintain
alignment for smooth clutch engagement and power delivery.
- Withstand
high rotational loads and thermal stress during acceleration.
- Prevent
slippage or imbalance within the drivetrain.
- Support consistent clutch performance in both road and track applications.
Without reliable clutch bolts, your Porsche’s clutch assembly cannot properly transmit power — potentially leading to severe drivetrain damage or failure.
Why Do Clutch Bolts Fail or Degrade?
Clutch bolts operate under extreme load and stress. Over time, they can lose their integrity due to mechanical and thermal factors.
Common Causes of Failure Include:
- Over-torqueing or under-torqueing during installation.
- Thread
fatigue from repeated tightening and loosening.
- Corrosion
or rust from exposure to moisture and heat cycles.
- Stretching
or distortion due to high torque loads.
- Vibration-induced loosening during aggressive driving.
When clutch bolts weaken or stretch, they compromise the clutch assembly’s structural integrity, leading to imbalance, noise, and even catastrophic clutch failure.
Why Replace or Upgrade Your Porsche Clutch Bolts?
Replacing your clutch bolts ensures secure, vibration-free clutch operation, while upgrading to performance-grade hardware provides extra reliability under extreme conditions.
Key Benefits:
- Restores
drivetrain integrity and clutch stability.
- Prevents slippage, vibration, and noise.
- Ensures
correct torque and alignment of clutch components.
- Reduces the risk of drivetrain imbalance or failure.
- Ideal for clutch replacements or performance upgrades.
- Available in corrosion-resistant finishes for longer lifespan.
It’s recommended to always replace clutch bolts during a clutch service — as reusing old or stretched bolts can compromise performance and safety.
Highlights:
- High-strength clutch bolts for Porsche applications.
- Precision-engineered for exact torque retention.
- Corrosion- and heat-resistant materials.
- Direct-fit replacements for all Porsche clutch systems.
- Essential for safe clutch installation and operation.
- Ideal for restoration, maintenance, and performance tuning.