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- 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
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Related, superseded, cross reference or alternative numbers for comparison.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 kit is comprised of the following items:
- 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 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
9 per car. Price is for each.
Fits:
Porsche 911 1965-69
Porsche 911 1987-89 (G-50)
Porsche 964 1989 (G-50)
This product supersedes Porsche's old part numbers:
- 90006704502
Diagram ref no 4.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90006704503
The product you are viewing cross references to these numbers
- 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 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 928 4.5L 1978-82
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
The washer fits various parts of most 911's
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 924 2.0L 1976-79
·
Porsche 924 2.0L 1980-85
·
Porsche 924 Turbo 2.0L 1979-81
·
Porsche 924 Turbo 2.0L 1982-84
·
Porsche 924 Carrera GT 2.0L 1981
·
Porsche 924 Carrera GTS 2.0L 1982
·
Porsche 924S 2.5L 1986-87
·
Porsche 924S 2.5L 1988
·
Porsche 928 4.5L 1978-82
·
Porsche 356 1950-55
·
Porsche 356A 1955-59
·
Porsche 356B 1959-63
·
Porsche 356C 1963-65
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N0122418
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