Rear Differential
- 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 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)

FITS:
Porsche 901 1965-68
◾ 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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
40309120WK
The product you are viewing cross references to these numbers





- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MKII GT3 2010>>
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94

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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
40309160WK
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 914 (1970-1976)

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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
40309130WK
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
- Porsche 911 1975-1977 3.0L Turbo (930)

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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
40309140WK
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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1978-1989 3.3L Turbo (930)

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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
40309150WK
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
- Porsche 911 1984-1986 3.2L

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.





- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

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.





- Porsche 911 1965-1968 2.0L / 912 SWB (F)

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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3J901
The product you are viewing cross references to these numbers





- Porsche 911 1965-1968 2.0L / 912 SWB (F)

Fits:
Porsche 911 / S / L >>1968
Porsche 912 >>1967
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90133223902
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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91531804504
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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988>>
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92833251100
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 914 (1970-1976)
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90133226501
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 914 (1970-1976)
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90133226502
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 914 (1970-1976)
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90133226503
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 914 (1970-1976)
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90133226504
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 914 (1970-1976)
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90133226505
The product you are viewing cross references to these numbers



Benefits of a limited-slip differential
The main advantage of a limited-slip differential is demonstrated by considering the case of a standard (or "open") differential in off-roading situations where one wheel has no contact with the ground. In such a case (with a standard differential), the non-contacting wheel will receive 100% of the power, while the contacting wheel will remain stationary. The torque transmitted will be equal at both wheels, and therefore, will not exceed the threshold of torque needed to move the wheel with traction. In this situation, a limited-slip differential prevents 100% of the power from being allocated to one wheel, and thereby keeping both wheels in powered rotation.