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Clutch Kits
By OE Match
- 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)
Fitting Position: Transmission End
Inner Diameter: 90 mm, Outer diameter: 110 mm, Width: 12 mm
Radial Shaft Seal Design.
Fits:
Porsche 911 3.0L 1978 - 1983
Porsche 911 3.2L 1984 - 1989
Porsche 930 Turbo 1975 - 1989
Diagram Ref No 33
The rear main oil seal fits at the rear of the crankshaft where it passes through the engine case. It helps retain engine oil inside the crankcase and prevents oil from leaking into the flywheel, clutch, or transmission bellhousing area.
Functions
• Replaces the rear crankshaft oil seal
• Helps seal the rear of the engine crankshaft
• Helps prevent engine oil leaks from the bellhousing area
• Protects the clutch and flywheel area from oil contamination
• Supports correct crankcase oil retention
• Replaces hardened, worn, split, leaking, or damaged original seals
• OE Match replacement for Porsche 911 and 930 engine service.
Why Replace This Part?
Rear main oil seals are exposed to heat, crankshaft rotation, oil, pressure changes, and age-related wear. Over time, the seal can harden, shrink, crack, wear, or lose sealing ability. A failed rear main seal may cause oil leaks between the engine and gearbox, oil contamination on the clutch, burning oil smells, or visible oil dripping from the bellhousing area. Replacing the seal helps restore a clean, reliable crankshaft seal.
When to Replace This Part
• Oil is leaking from between the engine and gearbox
• Oil drips are visible from the bellhousing area
• The clutch or flywheel is contaminated with oil
• The engine or gearbox has been removed
• The flywheel is being removed or replaced
• The original seal is hardened, worn, split, or leaking
• Preventative replacement is being carried out during clutch or engine service.
Where it fits on the car
This oil seal fits at the rear crankshaft position on Porsche 911 and 930 engines. It sits between the crankshaft and engine case, behind the flywheel area.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99911342641
The product you are viewing cross references to these numbers
OEMatch Clutch Kits — Engagement, Smoothness, Control
OEMatch clutch kits for Porsche models provide complete replacement sets intended to restore smooth engagement and consistent power transfer. These kits gather matched components to renew pedal feel and drivability while offering standard and performance-oriented options for different uses.
Available Types
- Standard replacement kits matching original specifications and including pressure plate, friction disc and release bearing
- Performance kits for higher torque or sport-focused use, with upgraded friction materials and reinforced plates
- Specialist kits for restoration and classic Porsche models, selected to match model-specific requirements
Understanding OEMatch Clutch Kits
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original clutch kits.
OE (Original Equipment) refers to parts matching original specifications for the clutch kits and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM clutch kits engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. OEMatch supplies a wide range of Porsche components and maintains extensive cross-reference information to support repair, restoration and routine servicing.
A clutch kit combines the friction disc, pressure plate and release bearing so components are matched and balanced; replacing the kit restores consistent engagement, helps control heat and reduces driveline vibration.
Benefits Include
- Restores smooth gear engagement and consistent power transfer to the gearbox
- Eliminates clutch slip and judder by renewing all wear items together
- Improves pedal response and driver control after replacement
Why Clutch Kits Wear and Fail
- Friction material wear from mileage or aggressive driving
- Heat glazing or burning caused by prolonged slipping
- Contamination from oil leaks or hydraulic fluid
- Weak or fatigued pressure plate springs reducing clamping force
- Misalignment or worn release bearings causing uneven wear
The Importance of Replacing with OEMatch Clutch Kits
Replacing the clutch kit as a complete set ensures components are matched and balanced, preserving pedal feel and engagement precision. For Porsche models, correct material choice and balanced assemblies reduce the risk of early wear and limit stress on the gearbox and transmission bearings. Selecting a kit that aligns with the vehicle’s torque and intended use helps maintain reliable operation and avoids premature failures caused by mixed-age components.
Advantages
- Complete sets that avoid mismatch between old and new parts
- Options for standard and higher-capacity kits to suit maintenance or upgraded use
- Suitable for restoration, maintenance and performance upgrades with parts selected for Porsche applications
