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- 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 1975-1977 3.0L Turbo (930)
This clutch bolt is a high-quality replacement fastener used to secure the clutch pressure plate to the flywheel on classic air-cooled Porsche models. Manufactured to match the original equipment specifications. It is ideal for rebuilds, maintenance, or restoration projects on Porsche 911 (1970–1986) and 930 Turbo (1975–1977).
Sold each, 9 required per vehicle.
Porsche 911 1970 - 1986 (915 Gearbox)
Porsche 930 Turbo 3.0L 1975 - 1977 (915 Gearbox)
• During clutch or flywheel replacement
• If original bolts are corroded, stretched, or damaged
• After removal during maintenance
• When performing transmission or drivetrain overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90006709003
The product you are viewing cross references to these numbers
- 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
Built to factory spec for 911, 924S, 944, 964, and 968. It used for secure clamping of the flywheel to the crankshaft, maintaining precise alignment and long-term reliability.
Sold each, 9 required per vehicle.
Fits:
Porsche 911 1978-89
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 964 1989-94 (not RS)
Porsche 968 1992-95
Diagram ref no 6.
Provides the critical clamping force between crankshaft flange and flywheel. Correct bolt stretch and friction are essential to prevent loosening, fretting, or flywheel run-out that can cause vibration, starter engagement issues, or clutch damage.
Over time, flywheel bolts can stretch, corrode, or lose their clamping strength due to repeated torque cycles and heat exposure. A weakened or reused bolt may fail to maintain the necessary preload, risking vibration, misalignment, or flywheel damage.
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 new bolt set ensures secure fastening, correct torque tension, and long-term drivetrain reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010220601
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)
Flywheel Bolt – Sold each, 6 required rea car
OE Match replacement flywheel bolt for early Porsche 911
modes. This high-load fastener secures the flywheel directly
to the crankshaft, making it a critical component when carrying out clutch,
flywheel or engine rebuild work.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)
Diagram ref no 8
Size: M12 x 1.25 x 27.5mm
Quantity required: 6
Price is for: 1 bolt
What Does the Flywheel Bolt Do?
The flywheel bolts securely clamp the flywheel to the crankshaft. This connection must withstand the rotational forces and repeated loading produced by the engine while maintaining accurate flywheel positioning.
A secure flywheel-to-crankshaft connection is essential for reliable transfer of engine torque to the clutch and transmission.
Why Do Flywheel Bolts Need Replacing?
Flywheel bolts operate under substantial mechanical load. Removal, repeated tightening, incorrect torque or previous engine work can affect their condition.
They should be inspected for:
- Damaged or stretched threads
- Corrosion Rounded or damaged heads
- Signs of previous overtightening
- Physical distortion
- Incorrect or unidentified replacement bolts
When Should They Be Replaced?
Replacement is recommended whenever the flywheel is removed
during major engine work, particularly during:
- Engine rebuilds
- Crankshaft repairs
- Flywheel replacement
- Major clutch work
- Restoration of an unknown or previously modified engine
Always follow the correct Porsche workshop procedure and specified tightening sequence when installing flywheel fasteners.
Checks During Installation
Before fitting, inspect the:
- Crankshaft threads
- Flywheel mounting surface
- Flywheel bolt holes
- Flywheel condition
- Locking components
- Crankshaft-to-flywheel mating surfaces
Any damaged threads or incorrect seating should be rectified before final assembly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99906700702
The product you are viewing cross references to these numbers
- 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 1975-1977 3.0L Turbo (930)
- Porsche 914 (1970-1976)
Price is for each. Need 6.
Fits:
Porsche 911 1970-77 (Not Sportomatic)
Porsche 930 Turbo 1975-77
Porsche 914 1970-76
Click on 'Zoom in' to see the diagram.
Diagram ref no 8.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110217100
The product you are viewing cross references to these numbers
- 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
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
The product you are viewing cross references to these numbers