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Porsche // 928 (1978-1995) // 928S2 4.7L 1984-86
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Flywheel bolt, SET OF 9. Porsche 911 / 924S / 944 / 964 / 968 - 93010220601
93010220601/1KIT
Vehicle Group
- 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) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Information
Flywheel socket head bolt, SET OF 9.
This flywheel bolt set is manufactured to exact factory specifications for secure and precise flywheel installation. Each bolt provides the correct clamping force between the crankshaft flange and flywheel, maintaining alignment, minimizing vibration, and ensuring long-term drivetrain reliability.
Fits:
Porsche 911 1978 - 1989
Porsche 924S 1986 - 1988
Porsche 944 1982 - 1991
Porsche 964 1989 - 1994 (not RS)
Porsche 968 1992 - 1995
Diagram ref no 6.
These bolts are responsible for safely securing the flywheel to the crankshaft. Proper bolt stretch and friction prevent loosening, fretting, or flywheel run-out that could lead to clutch or starter damage.
Over time, flywheel bolts can stretch, corrode, or lose their strength due to heat and torque cycling. Replacing them ensures consistent preload and drivetrain safety.
Replace the flywheel bolts when:
• Performing a clutch or flywheel replacement (most Porsche bolts are single-use torque-to-yield).
• Bolts show signs of corrosion, thread damage, or head wear.
• The factory service procedure specifies new bolts for reassembly.
Installing a complete new set of 9 ensures even torque distribution, secure fastening, and dependable long-term performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010220601
The product you are viewing cross references to these numbers
This flywheel bolt set is manufactured to exact factory specifications for secure and precise flywheel installation. Each bolt provides the correct clamping force between the crankshaft flange and flywheel, maintaining alignment, minimizing vibration, and ensuring long-term drivetrain reliability.
Fits:
Porsche 911 1978 - 1989
Porsche 924S 1986 - 1988
Porsche 944 1982 - 1991
Porsche 964 1989 - 1994 (not RS)
Porsche 968 1992 - 1995
Diagram ref no 6.
These bolts are responsible for safely securing the flywheel to the crankshaft. Proper bolt stretch and friction prevent loosening, fretting, or flywheel run-out that could lead to clutch or starter damage.
Over time, flywheel bolts can stretch, corrode, or lose their strength due to heat and torque cycling. Replacing them ensures consistent preload and drivetrain safety.
Replace the flywheel bolts when:
• Performing a clutch or flywheel replacement (most Porsche bolts are single-use torque-to-yield).
• Bolts show signs of corrosion, thread damage, or head wear.
• The factory service procedure specifies new bolts for reassembly.
Installing a complete new set of 9 ensures even torque distribution, secure fastening, and dependable long-term performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010220601
93010220600
93010220601
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
9 x Flywheel bolt. Porsche 911 / 924S / 944 / 964 / 968 (93010220601/1)
Unit Price: £2.75
InStock
Price: £24.75
In stock
Related products
Vehicle Group
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Information
Clutch bolt.
Price is for each.
Fits:
Porsche 930 1978-89
Porsche 928 1978-83
Click on 'Zoom in' to see the diagram.
Diagram ref no 16.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90007413603
The product you are viewing cross references to these numbers
Price is for each.
Fits:
Porsche 930 1978-89
Porsche 928 1978-83
Click on 'Zoom in' to see the diagram.
Diagram ref no 16.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90007413603
90007413603
The product you are viewing cross references to these numbers
Price: £2.25
Orderable
Vehicle Group
- 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 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 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
Information
Single Mass Flywheel Bolt - M10x1.25x24
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
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
92810215101
92810215102
The product you are viewing cross references to these numbers
Price: £3.10
In stock
Vehicle Group
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Information
Clutch pressure plate bolt
OE Match clutch pressure plate bolt for Porsche 930 Turbo models from 1978–89 and Porsche 928 models from 1978–83. This M8 x 80 hexagon-head fastener corresponds to reference number 90007413603.
Sold individually
Fits:
Porsche 930 1978 - 1989
Porsche 928 1978 - 1983
Diagram ref no 16.
What This Product Does
This bolt forms part of the clutch fixing assembly, securing the pressure plate and associated starter-ring assembly in the correct position. Correct fasteners and tightening procedures help the clutch assembly remain evenly seated.
Functions
- Secures the clutch pressure plate assembly
- Maintains accurate positioning of the attached components
- Withstands the rotational forces and heat cycles found within the clutch assembly
- Provides the specified M8 x 80 fixing dimensions for the listed applications
Technical Details
- OE reference: 90007413603
- Fastener type: hexagon-head bolt
- Thread and length: M8 x 80
- Diagram reference: 16
- Sold EACH.
Symptoms of Fault
- Damaged, rounded or corroded bolt head
- Worn, stretched or contaminated threads
- Clutch vibration or noise caused by loose or unevenly tightened hardware
- Difficulty achieving the specified tightening torque
- Distortion caused by incorrect or mixed bolt lengths
Why Replacement Matters
Clutch hardware is exposed to repeated heat cycles, vibration and mechanical load. A damaged or unsuitable bolt may prevent the pressure plate from seating evenly. Inspect all associated fixings during clutch work and follow the Porsche workshop procedure for the correct tightening sequence and torque specification.
FAQs
- Is this supplied as a complete set?
No. Sold EACH. - Can the original bolts be reused?
Follow the relevant Porsche workshop guidance. Replace bolts showing damaged heads, worn threads, corrosion or distortion. - Is thread-locking compound required?
Only use thread treatment when specified by the appropriate workshop procedure. - What is important during installation?
Use the correct tightening sequence and specified torque so the pressure plate seats evenly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90007413603
90007413603
The product you are viewing cross references to these numbers
Price: £0.65
In stock
Vehicle Group
- 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 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 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
Information
Single mass flywheel bolt - M10 x 1.25 x 24.
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
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
92810215101
92810215102
The product you are viewing cross references to these numbers
Price: £9.13
Orderable