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Porsche > 911 & 912 (1965-1989) > 911 1978-1989 3.3L Turbo (930) > Gearbox / Transmission >

Clutch Bolts

Clutch Bolts

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DISPLAYING 1 to 7 (of 7 products)
Flywheel bolt, SET OF 9. Porsche 911 / 924S / 944 / 964 / 968 - 93010220600, 93010220601 - 1234
4
Flywheel bolt, SET OF 9. Porsche 911 / 924S / 944 / 964 / 968
93010220601/1KIT
Product Information
Product 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Related, superseded, cross reference or alternative numbers for comparison.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
93010220600
93010220601

The product you are viewing cross references to these numbers
Clutch bolt. Porsche 930 1978-89 / 928 1978-83 - 90007413603
2
Clutch bolt. Porsche 930 1978-89 / 928 1978-83
Special Order item
90007413603
Product Information
Product 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Related, superseded, cross reference or alternative numbers for comparison.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
90007413603

The product you are viewing cross references to these numbers
Clutch pressure plate bolt, M8 x 80. Porsche 930 Turbo 1978-89 / 928 1978-83 - 90007413603
4
Clutch pressure plate bolt, M8 x 80. Porsche 930 Turbo 1978-89 / 928 1978-83
90007413603/1
Product Information
Product 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
Flywheel bolt. Porsche 911 / 924S / 944 / 964 / 968 - 93010220600, 93010220601, 1610450200, 07584
3
Flywheel bolt. Porsche 911 / 924S / 944 / 964 / 968
Special Order item
93010220601
Product Information
Product Information
Flywheel bolt. Price is for each.



Fits:
Porsche 911 1978-89
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 964 1989-94 (not RS)
Porsche 968 1992-95

Click on 'Zoom in' to see the diagram.
Diagram ref no 6.

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Related, superseded, cross reference or alternative numbers for comparison.

93010220601
93010220600
93010220601
1610450200
07584

The product you are viewing cross references to these numbers
Flywheel bolt. Porsche 911 / 924S / 944 / 964 / 968 - 93010220600, 93010220601 - 1234
3
Flywheel bolt. Porsche 911 / 924S / 944 / 964 / 968
93010220601/1
Product Information
Product Information
Flywheel socket head bolt. 
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
93010220600
93010220601

The product you are viewing cross references to these numbers
Flywheel bolts, Pack of 9. Porsche 911 / 924S / 944 / 964 / 968 - 93010220600, 204-2801, 93010220601, 1610450200
2
Flywheel bolts, Pack of 9. Porsche 911 / 924S / 944 / 964 / 968
93010220601/2
Product Information
Product Information
Flywheel bolts. PACK OF 9



Fits:
Porsche 911 1978-89
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 964 1989-94 (not RS)
Porsche 968 1992-95 - Automatic

Click on 'Zoom in' to see the diagram.
Diagram ref no 6.

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

93010220601
93010220600
204-2801
93010220601
1610450200

The product you are viewing cross references to these numbers
Spring washer for Porsche 911, 924, 928, 356 - N0122418
2
Spring washer for Porsche 911, 924, 928, 356
N0122418/2
Product Information
Product Information
Spring washer. M8 x 15 
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



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

N0122418
N0122418

The product you are viewing cross references to these numbers
DISPLAYING 1 to 7 (of 7 products)
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About Clutch Bolts

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.

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