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Original Porsche Part Genuine Porsche part N01224111
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
This spring washer works in conjunction with the clutch bolt to help maintain proper preload and tension in the clutch assembly. The spring washer is designed to compensate for vibration, thermal cycling, and torque fluctuation — helping prevent the bolt from loosening under heavy engine operation.
Sold individually, 9 required per car.
Fits:
Porsche 930 3.0L 1975 - 1977
Diagram ref no 4.
Applications:
• Clutch assembly maintenance: Replace worn or fatigued fastener hardware during clutch overhaul
• Routine service: Use when reinstalling clutch cover or pressure plate to ensure correct torque retention
• Restoration builds: Maintain authenticity with Porsche OE-specified hardware
• Vibration-sensitive fastener application: Ensures secure seat where torque fluctuation is common
Fitment / Position on Car
• Installed on: Clutch assembly (typically between bolt head & mating surface)
• Position: Used with specific clutch mounting bolts in the 930 Turbo 3.0L driveline
• Hardware set: Sold per washer - necessary quantity varies by clutch bolt set
• Service note: Replace as part of a clutch hardware refresh or whenever clutch bolts are removed
Fasteners in performance driveline systems such as the clutch are not generic - they must be engineered to withstand torque, heat, and vibration specific to the application. This Porsche Genuine OE spring washer is manufactured with the correct spring rate, thickness, and material, ensuring that clutch bolts retain proper preload and reduce the risk of loosening under operational stress. Using generic washers can lead to improper preload, potential clutch disengagement issues, and accelerated wear.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
N0122418
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
Clutch plate, Pressure Plate, Release bearing, spring washers and bolts.

Fits:
Porsche 930 TURBO 3.0L 75-77
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLUTCHKIT17
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
Clutch plate, Pressure Plate, Release bearing, spring washers and bolts.
Fits:
Porsche 930 TURBO 3.0L 75-77
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLUTCHKIT18
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)

Fits:
Porsche 914 1970-76
Kit w/Hardware Includes:
(1) 91451215510 Hook
(1) 90007606402 M8 nut
(1) 90002500703 Flat washer
(1) N0122411 Spring washer
Click 'Zoom in' for large parts diagram.
Diagram ref no 24, 25, 26 and 27.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91451215510K
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
This rear brake disc cover plate kit is supplied with cover plates, a retaining bar, and mounting hardware, it restores proper underbody protection to factory standards.

Porsche 914-6 - 1970 to 1976
Diagram Ref No 3, 4, 5 and 6
What it does:
• Shields the rear brake discs from dirt, debris, and road spray
• Helps maintain efficient cooling and protects the rotor surfaces
Over time, the original cover plates can corrode, warpage, or suffer from broken fasteners. A replacement kit restores protection, preserves brake component integrity, and maintains that authentic appearance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135280121
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
Brake disc cover plate with retaining bar and bar fixings.
SET OF 2

Porsche 914-6 - 1970 to 1976
Diagram Ref No 3, 4, 5 and 6
What it does:
• Shields the rear brake discs from dirt, debris, and road spray
• Helps maintain efficient cooling and protects the rotor surfaces
Over time, the original cover plates can corrode, warpage, or suffer from broken fasteners. A replacement kit restores protection, preserves brake component integrity, and maintains that authentic appearance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135280121
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
This Radiator Engine Oil Cooler Kit is a complete genuine spec solution designed to restore proper oil temperature control and leak-free operation in classic air-cooled Porsche 911 engines. The kit includes the engine oil cooler along with all required seals, fittings, and the connecting hose to ensure a correct, reliable installation.
Fits:
- Porsche 911 1978-1989 3.3L Turbo (930)
Diagram Ref No 2, 3, 6, 16, 17, 22, 23
The oil cooler plays a critical role in regulating engine oil temperature by dissipating excess heat generated during normal driving and high-load conditions. Proper oil cooling helps maintain oil viscosity, protects internal engine components, and ensures long-term engine reliability. Over time, oil coolers can become restricted internally, while seals and hoses harden and begin to leak, compromising cooling efficiency and lubrication.
This kit replaces the oil cooler assembly along with the associated suction hose, O-rings, seals, and mounting components, eliminating common leak points and restoring factory-correct oil flow. All components are manufactured to OEM specifications, ensuring precise fitment, proper sealing, and dependable performance.
Ideal for engine rebuilds, restorations, or preventative maintenance, this oil cooler kit provides a complete, professional solution for maintaining correct oil temperature and protecting valuable classic Porsche engines.
What This Product Does:
- Regulates engine oil temperature: Oil absorbs heat from engine internals. Too hot, and its lubricating properties break down. The cooler releases excess heat into the surrounding air.
- Improves engine reliability: Cooler oil maintains viscosity and lubrication under high load, reducing wear.
- Protects critical components: Helps maintain optimal oil temperature, protecting bearings, cams, pistons, and other moving parts that depend on consistent lubrication.
- Includes all mounting & sealing hardware: Ensures a complete, correct OEM install — no missing seals or leaks.
Symptoms Of A Failing Oil Cooler System:
- High oil temperature under normal driving conditions
- Oil leaks around the cooler, seal rings, or hose connections
- Visible oil seepage near cooler fittings
- Reduced engine performance or overheating
- Frequent oil top-ups due to unseen leaks
- Sludge formation inside or around the cooler/hose (indicative of internal deposits)
Why Replacement Matters:
- Properly controlled oil temperature extends engine component life — especially under sustained load or high ambient temperatures.
- Cool oil holds its protective viscosity and prevents metal-to-metal contact that accelerates wear.
- Old seals and O-rings lose elasticity over time, leading to slow leaks.
- A full kit replaces all necessary sealing points.
- This kit uses genuine Porsche parts, ensuring correct fitment and compatibility with the factory oil cooling system on your 911.
- Correct oil temperature helps sustain peak engine performance, especially in spirited driving or classic car restoration scenarios.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT930.OE
The product you are viewing cross references to these numbers
- Porsche 911 1978-1989 3.3L Turbo (930)
This Radiator Engine Oil Cooler Kit is a complete alternative spec solution designed to restore proper oil temperature control and leak-free operation in classic air-cooled Porsche 911 engines. The kit includes the engine oil cooler along with all required seals, fittings, and the connecting hose to ensure a correct, reliable installation.
Fits:
- Porsche 911 1978-1989 3.3L Turbo (930)
Diagram Ref No 2, 3, 6, 16, 17, 22, 23
The oil cooler plays a critical role in regulating engine oil temperature by dissipating excess heat generated during normal driving and high-load conditions. Proper oil cooling helps maintain oil viscosity, protects internal engine components, and ensures long-term engine reliability. Over time, oil coolers can become restricted internally, while seals and hoses harden and begin to leak, compromising cooling efficiency and lubrication.
This kit replaces the oil cooler assembly along with the associated suction hose, O-rings, seals, and mounting components, eliminating common leak points and restoring correct oil flow. All components ensure precise fitment, proper sealing, and dependable performance.
Ideal for engine rebuilds, restorations, or preventative maintenance, this oil cooler kit provides a complete, professional solution for maintaining correct oil temperature and protecting valuable classic Porsche engines.
What This Product Does:
- Regulates engine oil temperature: Oil absorbs heat from engine internals. Too hot, and its lubricating properties break down. The cooler releases excess heat into the surrounding air.
- Improves engine reliability: Cooler oil maintains viscosity and lubrication under high load, reducing wear.
- Protects critical components: Helps maintain optimal oil temperature, protecting bearings, cams, pistons, and other moving parts that depend on consistent lubrication.
- Includes all mounting & sealing hardware: Ensures a complete, correct install — no missing seals or leaks.
Symptoms Of A Failing Oil Cooler System:
- High oil temperature under normal driving conditions
- Oil leaks around the cooler, seal rings, or hose connections
- Visible oil seepage near cooler fittings
- Reduced engine performance or overheating
- Frequent oil top-ups due to unseen leaks
- Sludge formation inside or around the cooler/hose (indicative of internal deposits)
Why Replacement Matters:
- Properly controlled oil temperature extends engine component life — especially under sustained load or high ambient temperatures.
- Cool oil holds its protective viscosity and prevents metal-to-metal contact that accelerates wear.
- Old seals and O-rings lose elasticity over time, leading to slow leaks.
- A full kit replaces all necessary sealing points.
- Correct oil temperature helps sustain peak engine performance, especially in spirited driving or classic car restoration scenarios.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT930.OEM
The product you are viewing cross references to these numbers
- Porsche 911 1978-1989 3.3L Turbo (930)
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
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
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