Rear Differential

This 2mm spacer ring allows for a much easier setup when retrofitting some differentials and or crown wheel and pinions within the 915 family.

Note
Longer ring gear bolts may be required

Differential Carrier Bearing.



Fits:
Porsche 914/6 1970–1972 Sportomatic gearbox only
Porsche 911 F 1965–1973

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Diagram ref no 8

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99905900800

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Differential carrier bearing.



Fits:
Porsche 914/6 1970–1972 Sportomatic gearbox only
Porsche 911 F 1965–1973

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Diagram ref no 8

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99905900800

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Differential housing hex bolt. M 12 X 1.25.



Fits:
Porsche 911 1965-83
Porsche 930 Turbo 3.0L 1975-77
Porsche 914 1970-76

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Diagram ref no 10

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91533227604

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Differential housing hex bolt. M 12 X 1.25.



Fits:
Porsche 911 1965-83
Porsche 930 Turbo 3.0L 1975-77
Porsche 914 1970-76

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Diagram ref no 10

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91533227604

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Differential Housing Lock Plate.



Fits:
Porsche 911 1965-89
Porsche 914 1970-76
Porsche 924 1976-85

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Diagram ref no 8.

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90133228501

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Differential Housing Lock Plate.



Fits:
Porsche 911 1965-89
Porsche 914 1970-76
Porsche 924 1976-85

Click 'Zoom in' for large parts diagram.
Diagram ref no 8.

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90133228501

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Differential outer bearing, Left. 50 x 90 x 21.7



Fits:
Porsche 911 1987-89
Porsche 911 Turbo 1975-89
Porsche 968 1992-95
Porsche 964 C2 / C4 1989-94
Porsche 993 C2 1994-98
Porsche 986 Boxster S 2000-04
Porsche 996 C2 / C4 1998-05
Porsche 996 Turbo GT2 2001-05
Porsche 996 GT3 2000-05
Porsche 997.1 Turbo / GT2 / GT2 RS 2007-09
Porsche 997.2 GT2 RS 2011
Porsche 997 GT3 / GT3 RS 2007-11

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Diagram ref no 11

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99905906400

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Differential outer bearing, Left. 50 x 90 x 21.7



Fits:
Porsche 911 1987-89
Porsche 911 Turbo 1975-89
Porsche 968 1992-95
Porsche 964 C2 / C4 1989-94
Porsche 993 C2 1994-98
Porsche 986 Boxster S 2000-04
Porsche 996 C2 / C4 1998-05
Porsche 996 Turbo GT2 2001-05
Porsche 996 GT3 2000-05
Porsche 997.1 Turbo / GT2 / GT2 RS 2007-09
Porsche 997.2 GT2 RS 2011
Porsche 997 GT3 / GT3 RS 2007-11

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Diagram ref no 11

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99905906400

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Differential output shaft seal. 48 x 68 x 10 mm.



Fits:
Porsche 911 Carrera 3.2L 1984-89
Porsche 911 Turbo 3.3 1978-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 1998-05
Porsche 986 Boxster 3.2L 2000-04
Porsche 986 968CS 1993-95

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Diagram ref no 20

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99911334741

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Differential output shaft seal. 48 x 68 x 10 mm.



Fits:
Porsche 911 Carrera 3.2L 1984-89
Porsche 911 Turbo 3.3 1978-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 1998-05
Porsche 986 Boxster 3.2L 2000-04
Porsche 986 968CS 1993-95

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Diagram ref no 20

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99911334741

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Friction plate upgrade kit, limited slip differential (LSD)



Fits:

Porsche 911 - 1972 to 1986 with 915 Gearbox
Porsche 968 - 1992 to 1995 
For cars with Porsche LSD fitted - Option Code M220 (Locking differential 40 %)

Upgrade the standard Porsche LSD to these Track Day / Race inspired components for improved, performance traction.

RacingDiffs Performance LSD clutch plates fit OEM Porsche (ZF) LSD unit without any modifications:

The clutch discs are perforated for better cooling and great viscosity to resist the oil build-up in the holes between dog ear plates as it is well known that drilled brake discs improve cooling over solid discs. It is the same with the LSD clutch discs.

The highest quality thermally processed tool steel is used which differentiates our products from any others on the market.

During the final steps of production the clutch plates are coated with special Molybdenum-Ceramic compound which optimizes the best ratio of friction coefficient and durability. This drastically reduces material wear and warping under extreme conditions providing our clutch plates the best possible longevity.

We mastered knowledge in the field of friction materials and coatings, which is the cornerstone of the quality of our products.

All of our clutch plates are thoroughly tested and are currently being used in various racing cars throughout Europe and USA including track, hill climb and rally.

Please Note:
Friction plate upgrade kit should only be fitted by someone with the relevant knowledge and experience.

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92833255100

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Automatic Torque Biasing Differential enables your car to accelerate quicker and corner faster.



Fits:
Porsche 911 901 GEARBOX

For Technical Specifications Click Here

Quaife ATB Helical LSD differential for Porsche 911 1969-74 is suitable for Porsche 911 models in model year 1969-74 only. A direct replacement for the standard Porsche differential, the Quaife ATB Helical LSD differential transforms your car’s performance.

Unlike a conventional plate-style limited slip differential, the Porsche 911 1969-74 Quaife ATB Helical LSD differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation.

The Porsche 911 1969-74 Quaife ATB Helical LSD differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the Porsche 911 1969-74 Quaife ATB Helical LSD differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.

The Porsche 911 1969-74 Quaife ATB Helical LSD differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.

The Porsche 911 1969-74 Quaife ATB Helical LSD differential is proven in circuit and drag racing, rallying and road use, and is produced from Corus steel billets, and is CAD designed and CNC machined, then inspected to ISO 9001 standards.

Automatic Torque Biasing Differential enables your car to accelerate quicker and corner faster.



Fits:
Porsche 911 G50 GEARBOX
Porsche 964
Porsche 993
Porsche 996
Porsche 968

For Technical Specifications Click Here

Quaife ATB Helical LSD differential for Porsche G50 is suitable for Porsche models with G50 gearbox. A direct replacement for the standard Porsche differential, the Quaife ATB Helical LSD differential transforms your car's performance.
Unlike a conventional plate-style limited slip differential, the Porsche G50 Quaife ATB Helical LSD differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation.
The Porsche G50 Quaife ATB Helical LSD differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the Porsche G50 Quaife ATB Helical LSD differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.
The Porsche G50 Quaife ATB Helical LSD differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.
The Porsche G50 Quaife ATB Helical LSD differential is proven in circuit and drag racing, rallying and road use, and is produced from Corus steel billets, and is CAD designed and CNC machined, then inspected to ISO 9001 standards.

Wavetrac® Differential.



FITS:
Porsche 911 1987-88 (G50 Gearbox)
Porsche 930 Turbo 5-Speed 1989>>
Porsche 964 Carrera
Porsche 993 Carrera
Porsche 968
Porsche 996 GT2 Rear diff
Porsche 996 GT3 Rear diff
Porsche 996 TURBO 6-Speed Manual Rear diff

• Innovative:
Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing diff design.

• Superior Materials:
9310 steel gears run in case-hardened billet or forged steel bodies. ARP® fasteners used throughout.

• Maintenance Free:
As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.

• Customizable:
If desired, you can alter the diff's behavior to suit your needs using optional components.

• Limited LIFETIME Warranty:
All Wavetrac® differentials include a transferable, Limited Lifetime Warranty.

For More information Click Here

Please note: This is a special order part and usually takes between 2-6 weeks to come into stock.

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40309160WK

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Wavetrac® Differential



FITS:
Gearbox type 901:
Porsche 911 1969-74
Porsche 914 1969-74

• Innovative:
Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing diff design.

• Superior Materials:
9310 steel gears run in case-hardened billet or forged steel bodies. ARP® fasteners used throughout.

• Maintenance Free:
As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.

• Customizable:
If desired, you can alter the diff's behavior to suit your needs using optional components.

• Limited LIFETIME Warranty:
All Wavetrac® differentials include a transferable, Limited Lifetime Warranty.

For More information Click Here

Please note: This is a special order part and usually takes between 2-6 weeks to come into stock.

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40309130WK

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Wavetrac® Differential.



FITS:
Gearbox type 915-18:
Porsche 911 1974-77
Porsche Turbo 930 1974-77

• Innovative:
Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing diff design.

• Superior Materials:
9310 steel gears run in case-hardened billet or forged steel bodies. ARP® fasteners used throughout.

• Maintenance Free:
As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.

• Customizable:
If desired, you can alter the diff's behavior to suit your needs using optional components.

• Limited LIFETIME Warranty:
All Wavetrac® differentials include a transferable, Limited Lifetime Warranty.

For More information Click Here

Please note: This is a special order part and usually takes between 2-6 weeks to come into stock.
The flange of the diff is thicker by 4mm and standard bolts are not suitable. New longer bolts need to be sourced separately as they don't come with the differential.

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40309140WK

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Wavetrac® Differential.



FITS:
Gearbox Type 915-43:
Porsche 911 1978-86
Porsche Turbo 930 1978-88

• Innovative:
Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing diff design.

• Superior Materials:
9310 steel gears run in case-hardened billet or forged steel bodies. ARP® fasteners used throughout.

• Maintenance Free:
As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.

• Customizable:
If desired, you can alter the diff's behavior to suit your needs using optional components.

• Limited LIFETIME Warranty:
All Wavetrac® differentials include a transferable, Limited Lifetime Warranty.

For More information Click Here

Please note: This is a special order part and usually takes between 2-6 weeks to come into stock.

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40309150WK

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Automatic Torque Biasing Differential enables your car to accelerate quicker and corner faster.



Fits:
Porsche 911 915 18 TEETH GEARBOX

For Technical Specifications Click Here

Quaife ATB Helical LSD differential for Porsche 911 18T is suitable for Porsche 911 models with 915 transmission and course spline 18 teeth. A direct replacement for the standard Porsche differential, the Quaife ATB Helical LSD differential transforms your car's performance.

Unlike a conventional plate-style limited slip differential, the Porsche 911 18T Quaife ATB Helical LSD differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation.

The Porsche 911 18T Quaife ATB Helical LSD differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the Porsche 911 18T Quaife ATB Helical LSD differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.

The Porsche 911 18T Quaife ATB Helical LSD differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.

The Porsche 911 18T Quaife ATB Helical LSD differential is proven in circuit and drag racing, rallying and road use, and is produced from Corus steel billets, and is CAD designed and CNC machined, then inspected to ISO 9001 standards.

Automatic Torque Biasing Differential enables your car to accelerate quicker and corner faster.



Fits:
Porsche 911 915 43 TEETH GEARBOX

For Technical Specifications Click Here

Quaife ATB Helical LSD differential for Porsche 911 18T is suitable for Porsche 911 models with 915 transmission and course spline 43 teeth. A direct replacement for the standard Porsche differential, the Quaife ATB Helical LSD differential transforms your car's performance.

Unlike a conventional plate-style limited slip differential, the Porsche 911 43T Quaife ATB Helical LSD differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation.

The Porsche 911 43T Quaife ATB Helical LSD differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the Porsche 911 43T Quaife ATB Helical LSD differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.

The Porsche 911 43T Quaife ATB Helical LSD differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.

The Porsche 911 43T Quaife ATB Helical LSD differential is proven in circuit and drag racing, rallying and road use, and is produced from Corus steel billets, and is CAD designed and CNC machined, then inspected to ISO 9001 standards.

3J Driveline Limited Slip Differential (LSD) NXG (NeXt Generation).



Applications: Porsche 901

Type: Porsche 901
Ramps Angles: 45/45 40/90 30/90 50/90
30/60 35/35 20/75 30/30
35/45 40/60 20/80
Pre-load (lbs/ft): 0-150

The latest NXG LSD is designed and manufactured to be the strongest, most progressive and versatile LSD unit in the marketplace today.
The 3J plate pack always run with 8 active surfaces, even in our lighter settings, giving maximum surfaces and surface area contact during use. Our new pre-load spacer helps generate the pre-load. Rather than just have the 2 or 3 settings of other units, we can 'fine tune' to particular pre-load settings complemented with our choice of ramps, to get the perfect LSD set up for you. The Bevel and planet gear pack has been designed to be the smoothest mesh, biggest and strongest tooth profile that we have ever been involved with. Eliminating the rattle, and excessive back lash of other units. Also With the added benefit of dual ramps. Dual Ramps available are 30/90, 40/90, 30/60, 45/45, 50/90, plus more by request.

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3J901

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Magnet carrier disc.



Fits:
Porsche 911 G (1974 - 1983) *** up to 1978 for vehicles with Sportomatic, from 1978 for vehicles with manual transmission type 915

Porsche 911 Turbo (1975 - 1988)
Porsche 911 Carrera (1984 - 1986)

Click 'Zoom in' for large parts diagram.
Diagram ref no 18

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91531804504

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Multi variation ramp set for LSD (limited slip differential)

Fits:
Porsche 911 Carrera - 1972 to 1989
Porsche 944 Early models - 1982 to 1991
Porsche 968 - 1991 to 1995
Only for cars with Option Code - M220 (Locking differential 40 %)

Upgrade the standard Porsche LSD to these Track Day / Race inspired components for improved, performance traction.

What is LDS ramp angle?
Ramp angles primarily determine the behaviour of the LSD under acceleration and braking. They are often referred to as 1 way, 1.5 way, and 2 way, these terms refer to when the differential locks. 

LSD Multi-variant Ramp set (Pressure plates) provides 3 different ramp angle positions:

30°/30°
30°/60°
50°/65°

Pressure plates are made from a forged material for maximum strength
High-precision CNC finish provides a Plug & Play installation
Chemically heat treated for high durability and wear resistance

Why is the Multi-variant Ramp set a must-have for all types of racing ?
This set combined with our Performance clutch set is the ultimate LSD performance upgrade. It allows you to adjust your differential from 25% up to 100% lock in 2 ways or 1.5 ways. By altering the ramp angle setup, you control how fast and effectively the differential locks. You don't need several differential as adjusting this one according to your track requirements will guarantee success.

Please Note:
Friction plate upgrade kit should only be fitted by someone with the relevant knowledge and experience.

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Spacer ring for distance adjustment in the transmission,
2.5 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226501

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Spacer ring for distance adjustment in the transmission,
2.6 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226502

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Spacer ring for distance adjustment in the transmission,
2.7 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226503

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Spacer ring for distance adjustment in the transmission,
2.8 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226504

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Spacer ring for distance adjustment in the transmission,
2.9 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226505

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Spacer ring for distance adjustment in the transmission,
3.0 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226506

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Spacer ring for distance adjustment in the transmission,
3.1 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226507

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Spacer ring for distance adjustment in the transmission,
3.2 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226508

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Spacer ring for distance adjustment in the transmission,
3.3 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226509

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Spacer ring for distance adjustment in the transmission,
3.5 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226511

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Spacer ring for distance adjustment in the transmission,
3.6 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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Spacer ring for distance adjustment in the transmission,
3.7 mm.



Fits:
Porsche 911 F (1965 - 1970)
Porsche 914/6 (1970 - 1972) Only for 914/6 with Sportomatic transmission

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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90133226513

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Rear left and right differential carrier bearing.



Fits:
Porsche 911 1969-1971*
Porsche 911 1972-1989
Porsche 912 1969 *
Porsche 912E 1976
Porsche 914 1970-1976
Porsche 930 Turbo 1976-1989
Porsche 911 (964) C2 1989-1994 (rear right only)
Porsche 911 (964) Turbo 1990-1994 (rear right only)
Porsche 911 (993) 1995-1998 (rear right only)
Porsche 924 1976-1985
Porsche 928 1978-1995

* For models with magnesium pressure cast housing.

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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99905902702

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Rear left and right differential carrier bearing



Fits:
Porsche 911 1969-1971*
Porsche 911 1972-1989
Porsche 912 1969 *
Porsche 912E 1976
Porsche 914 1970-1976
Porsche 930 Turbo 1976-1989
Porsche 911 (964) C2 1989-1994 (rear right only)
Porsche 911 (964) Turbo 1990-1994 (rear right only)
Porsche 911 (993) 1995-1998 (rear right only)
Porsche 924 1976-1985
Porsche 928 1978-1995

* For models with magnesium pressure cast housing.

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Diagram ref no 8

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99905902702

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Thrust washer driveshaft flange. 
Sold each - 2 required per car



Fits:
Porsche 911 2.0ltr - 1965 to 1967

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Diagram ref no 16

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Thrust washer limited slip differential. 
Sold each - 2 required per car



Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 924 - 1978 to 1985
Porsche 928 - 1978 to 1991
Porsche 968 - 1992 to 1995
Porsche 914 - 1970 to 1976

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Diagram ref no 7

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