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Flywheel / Torque
By OE Match
- Porsche 911 1978-1983 3.0L / SC
This OE MATCH Flywheel Kit is a high-quality OEM-equivalent assembly designed for Porsche models, providing a complete solution for restoring smooth and reliable engine-to-transmission operation. This kit typically includes the flywheel and associated components required for proper installation and performance.
Kit Contents:
x1 Flywheel (93010220403/3)
x9 Flywheel Bolts (93010220601/1)
x1 Flywheel Spigot Bearing (90110202501/1)
Fits:
- Porsche 911 1978-1979 3.0L / SC
Diagram Ref No 2, 3, 6
What This Product Does:
- Transfers engine power to the clutch and transmission
- Stores rotational energy to maintain smooth engine operation
- Provides a friction surface for the clutch assembly
- Helps stabilise engine idle and reduces vibration
- Ensures smooth gear engagement and drivetrain performance
Symptoms Of Wear Or Failure:
- Clutch slipping or inconsistent engagement
- Vibration or shuddering when accelerating or changing gears
- Unusual noises such as rattling or grinding from the transmission area
- Difficulty shifting gears Burning smell from excessive friction or overheating
- Visible scoring, cracks, or heat spots on the flywheel surface
Why Replacement Matters:
- Restores smooth power transfer and driving comfort
- Prevents premature wear of the clutch and transmission components
- Ensures proper clutch engagement and gear shifting
- Eliminates vibration and noise issues
- Avoids costly drivetrain repairs caused by continued use of a damaged flywheel
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FLYWHEELKIT911
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
The OE Match Flywheel for Clutch, 225 mm is a precision-engineered replacement drivetrain component designed to transfer engine power efficiently to the clutch assembly and transmission. Manufactured to OE specifications for fit, balance and durability, this flywheel provides the correct friction surface for clutch operation while helping to smooth engine power delivery and reduce drivetrain vibration.
Fits:
- 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
Machined from high-quality materials to ensure strength and long service life, the flywheel acts as a rotating mass attached to the crankshaft, storing kinetic energy and providing a stable platform for clutch engagement. Its 225 mm clutch contact surface is designed to maintain factory performance characteristics and reliable operation.
What This Product Does:
- Transfers engine torque to the clutch and transmission.
- Provides the friction surface for clutch engagement.
- Stores rotational energy to smooth engine operation.
- Helps maintain stable engine idle characteristics.
- Reduces drivetrain vibration and harshness.
- Supports smooth gear changes and clutch performance.
- Contributes to efficient power delivery and drivability.
Symptoms Of Wear Or Failure:
- Clutch shudder or judder during take-off.
- Excessive vibration through the drivetrain.
- Difficulty achieving smooth clutch engagement.
- Hot spots or scoring on the flywheel surface.
- Premature clutch wear.
- Burning clutch odours during operation.
- Rattling or knocking noises from the bellhousing area.
- Warped clutch friction surface.
- Uneven clutch pedal feel or engagement characteristics.
- Reduced overall driving refinement.
Why Replacement Matters:
- The flywheel is subjected to continuous engine torque, clutch friction and repeated heat cycles throughout its service life. Over time, the friction surface can become worn, heat-damaged, cracked or warped, affecting clutch performance and overall drivability.
- A damaged flywheel can lead to clutch vibration, poor engagement characteristics and accelerated wear of the clutch disc and pressure plate. Installing a new clutch on a worn flywheel may result in reduced clutch lifespan and continued drivability issues. In severe cases, excessive wear or damage can compromise drivetrain reliability and increase repair costs.
- Replacing a worn flywheel restores smooth clutch operation, improves gear engagement and helps maximise the performance and longevity of the clutch system. An OE Match replacement provides factory-style fitment, precise balancing and durable construction, ensuring dependable operation and preserving the driving experience expected from your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110220112
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 1978-1983 3.0L / SC
OE Match lightweight clutch flywheel engineered as a direct-fit replacement for the original factory flywheel on early Porsche 911 models equipped with a 225 mm clutch (typically 911/912 engines 1970–1977)
Fits:
Porsche 911 1970 - 1977
Diagram ref no 3
Lightweight flywheels are popular upgrades because they allow the engine to rev more freely and respond more quickly to throttle inputs - a benefit especially appreciated in spirited road use and track applications. The 225 mm diameter and bolt pattern ensure compatibility with standard 911 clutch kits, pressure plates, and housings designed for this generation.
Despite its reduced mass, this OE Match version maintains the structural integrity required for everyday driving and performance use, utilizing materials and manufacturing methods that align with Porsche engineering intent.
The lightweight clutch flywheel stores rotational energy and provides the mounting surface for the clutch pressure plate and friction disc. By reducing mass compared to heavier stock units, it lowers rotational inertia, which helps the engine accelerate more quickly and improves engine responsiveness.
Function:
When installed between the engine crankshaft and clutch assembly, this flywheel:
• Reduces rotational mass compared to standard flywheels
• Improves throttle response and engine rev-up behaviour
• Supports consistent clutch engagement and release
• Works with standard clutch disc and pressure plate assemblies .
he flywheel interface ensures proper alignment with the crank flange and provides the correct surface for the clutch friction disc to engage, which is critical for smooth power transfer and drivability.
Over time, original flywheels can become warped, worn, or damaged due to heat cycles, clutch slippage, or long-term use. A compromised flywheel can lead to uneven clutch engagement, noise, or vibration. Installing a new OE Match lightweight flywheel restores correct rotational dynamics and engagement surfaces, while the reduced mass enhances throttle responsiveness and engine feel.
When to replace:
• Clutch disc replacement or driveability issues
• Flywheel scoring, heat glazing, or warping
• Upgrading for improved throttle response
• Transmission service requiring flywheel removal
• Preventive refresh on high-mile engines
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110220112
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
The OE Match Flywheel Spigot Bearing also known as a pilot bearing, is a precision-engineered replacement drivetrain component designed to support and align the gearbox input shaft within the flywheel or crankshaft assembly. Manufactured to OE specifications for fit, performance and durability, this small but critical bearing helps ensure smooth clutch operation, accurate gearbox alignment and reliable transmission performance.
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
Diagram Ref No 4
Constructed from high-quality bearing materials and engineered to withstand continuous rotational forces, vibration and temperature fluctuations, the spigot bearing reduces friction between the engine and transmission assemblies. Proper operation of this component is essential for smooth gear changes and long-term drivetrain reliability.
What This Product Does:
- Supports and centres the gearbox input shaft.
- Maintains correct alignment between the engine and transmission.
- Reduces friction between rotating drivetrain components.
- Allows smooth rotation of the transmission input shaft.
- Helps ensure smooth clutch engagement and disengagement.
- Minimises wear on gearbox and clutch components.
- Contributes to reliable drivetrain operation and longevity.
Symptoms Of Wear Or Failure:
- Squealing, whining or grinding noises from the bellhousing area.
- Noise that changes when the clutch pedal is operated.
- Difficulty engaging gears, particularly first or reverse.
- Transmission input shaft vibration.
- Clutch drag or incomplete clutch disengagement.
- Rough or inconsistent gear changes.
- Excessive wear on the clutch disc or gearbox input shaft.
- Increased drivetrain vibration.
- Premature wear of associated transmission components.
Why Replacement Matters:
- The flywheel spigot bearing operates continuously whenever the engine is running and plays a vital role in maintaining proper alignment between the engine and gearbox. Over time, bearing surfaces can wear, lubrication can deteriorate and contamination may affect bearing performance, leading to increased friction and misalignment.
- A worn spigot bearing can cause difficult gear selection, clutch disengagement issues and accelerated wear of the gearbox input shaft and clutch components. If left unresolved, bearing failure may lead to costly transmission repairs and reduced drivetrain reliability.
- Replacing a worn flywheel spigot bearing restores proper gearbox alignment, improves clutch and transmission operation and helps protect surrounding drivetrain components from premature wear. An OE Match replacement provides factory-style fitment, precision manufacturing and dependable long-term durability, ensuring smooth performance and reliable operation for your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110202501
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
The OE Match 225mm Forged Chromoly Lightweight Flywheel is a high-performance replacement drivetrain component engineered to improve engine responsiveness, acceleration and overall driving engagement. Manufactured from premium forged chromoly steel, this lightweight flywheel offers exceptional strength and durability while significantly reducing rotational mass compared to a standard flywheel.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Designed for use with 225mm clutch assemblies, the flywheel provides the critical friction surface required for clutch operation while maintaining precise balance and OE-style fitment. The lightweight construction allows the engine to rev more freely, making it a popular upgrade for performance-focused Porsche applications, track-day vehicles and engine rebuild projects.
What This Product Does:
- Transfers engine torque to the clutch and transmission.
- Provides the friction surface for clutch engagement.
- Stores and transfers rotational energy from the crankshaft.
- Reduces rotating mass compared to a standard flywheel.
- Improves engine responsiveness and throttle reaction.
- Allows the engine to gain and shed revs more quickly.
- Supports smooth clutch operation and gear changes.
- Enhances overall driving performance and engagement.
Symptoms Of Wear Or Failure:
- Clutch shudder or vibration during engagement.
- Excessive drivetrain vibration.
- Difficulty achieving smooth gear changes.
- Hot spots or scoring on the clutch contact surface.
- Premature clutch wear.
- Burning clutch odours during operation.
- Cracks or visible damage on the flywheel face.
- Rattling or knocking noises from the bellhousing area.
- Uneven clutch engagement characteristics.
- Reduced drivetrain smoothness and performance.
Why Replacement Matters:
- The flywheel is subjected to constant engine torque, clutch friction and repeated heat cycles throughout its service life. Over time, the friction surface can become worn, warped, cracked or heat-damaged, reducing clutch efficiency and negatively affecting drivability.
- A damaged flywheel can cause clutch vibration, inconsistent engagement and accelerated wear of the clutch disc and pressure plate. Installing a new clutch onto a worn flywheel may compromise clutch performance and significantly shorten component lifespan. In severe cases, flywheel failure can lead to extensive drivetrain damage and costly repairs.
- Replacing a worn flywheel with a forged chromoly lightweight unit restores reliable clutch performance while offering enhanced engine response and reduced rotational inertia. The OE Match lightweight flywheel provides factory-style fitment, precision balancing and exceptional strength, making it an ideal choice for Porsche owners seeking improved performance, durability and driving enjoyment.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010221500
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
Fits:
Porsche 911 3.0L SC 1978-79
The flywheel for Porsche 911 SC 78/79 is a high-quality spare part, specially designed for vehicles with a power of 180 to 188 hp. This flywheel is an essential part of the engine and ensures that the rotary motion of the engine is transmitted to the crankshaft.
Made of sturdy material and using modern manufacturing techniques, this flywheel ensures reliable and precise performance. It is manufactured with great care and precision to meet the high demands and standards of your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010220403
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
Fits:
Porsche 911 3.0L SC 1980-83
The flywheel is an essential component of the drivetrain in a vehicle. It is located between the engine and the clutch and serves to transfer the rotational motion of the engine to the transmission shaft.
Our flywheel has been specifically designed for the Porsche 911 of model years 1980 to 1983. It is characterized by high-quality materials and precise craftsmanship to ensure optimal performance and reliability.
Made of robust steel, the flywheel offers excellent strength and durability to withstand the stresses of the engine. Additionally, it is carefully balanced to minimize vibrations and imbalances, resulting in smooth engine operation.
The installation of the flywheel is carried out according to the original specifications, ensuring a seamless installation process. It is a direct replacement for the original flywheel and fits perfectly into the mentioned model years of the Porsche 911.
With our high-quality flywheel, you can optimize the performance and reliability of your Porsche 911 (model years 1978-1983). Whether you are restoring your vehicle or looking to replace a faulty flywheel, our flywheel is the ideal choice. Trust in our quality and enjoy an enhanced driving experience.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010221500
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)
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 Flywheel / Torque Converter — Fit, Function, Confidence
OEMatch Flywheel / Torque components are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable. Flywheels and torque converters transfer engine torque to the gearbox, smooth rotational forces and allow engagement in manual and automatic transmissions. For Porsche models they play a central role in clutch performance, idle balance and transmission behaviour.
Understanding OEMatch Flywheel / Torque Converter
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original flywheel / torque.
OE (Original Equipment) refers to parts matching original specifications for the flywheel / torque and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM flywheel / torque engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
OEMatch also catalogues over 4,000 part numbers with more than 8,700 OE cross-references and continues to develop new lines to support Porsche vehicles across many generations.
Benefits Include
- Restores smooth engine-to-transmission torque transfer and reduces driveline vibration
- Provides correct friction surfaces and balance for reliable clutch engagement
- Offers options for manual, automatic and PDK applications to suit specific Porsche drivetrains
Why Flywheel / Torque Wear and Fail
- Heat and clutch slippage can warp or glaze flywheel friction surfaces
- Ring gear wear or cracked teeth affect starter engagement
- Torque converters suffer fluid contamination, internal seal failure or bearing wear leading to shudder or loss of torque transfer
The Importance of Replacing with OEMatch Flywheel / Torque
Timely replacement restores smooth torque delivery, reduces vibration and prevents secondary damage to the clutch, gearbox and bearings. Replacing worn units during clutch or transmission service helps retain balance and reduces the risk of recurrent noise, shudder or accelerated wear. Selecting the correct unit for the Porsche model and transmission type supports consistent drivability.
Advantages
- Direct-fit units prepared to original specifications where applicable
- Options available for OEM-spec, remanufactured and performance-oriented replacements where suitable
- Parts selected for Porsche applications and cross-referenced to factory references
Available Types
- Single-mass flywheels for manual transmissions
- Dual-mass flywheels and carrier assemblies
- Lightweight flywheels for performance applications where appropriate
- Torque converters for automatic and PDK transmissions, including remanufactured units
Support & Advice
Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new bolts where specified and confirm correct alignment and balance when installing flywheels or torque converters.
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