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Rear Differential

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DISPLAYING 1 to 8 (of 8 products)
Special Order item
90133228501
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Differential Housing Lock Plate.

porsche

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
90133228501

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Differential Housing Lock Plate.

oematch

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
90133228501

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016409399B
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Differential output shaft seal.

porsche

Fits:
For cars with manual transmission
Porsche 924 1976-88
Porsche 944 1982-91
Porsche 986 / 987 / 981 / 982 Boxster 1997>>
Porsche 987 / 981 / 982 Cayman 2005>>

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Diagram ref no 4

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016409399B
016409399B

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016409399B/1
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Product Information
Differential output shaft seal.

oematch

Fits:
For cars with manual transmission
Porsche 924 1976-88
Porsche 944 1982-91
Porsche 986 / 987 / 981 / 982 Boxster 1997>>
Porsche 987 / 981 / 982 Cayman 2005>>

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Diagram ref no 4

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016409399B
016409399B
314096090323
016409399B
15195
190035410
108768

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016409123
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Roller Bearing Porsche 924 / 944

Fits:

  • 924S with 5-speed manual transmission
  • 944 with 5-speed manual transmission
  • 924 4-speed manual transmission with gearbox 0886/088A
  • 924 1981-85 5-speed manual transmission with gearbox type 0168 (gear number VQ / MD)
  • 924 1981-85 5-speed manual transmission with gearbox type 0169 (gear number VR / UV / ME / MF)
  • 924 1981-85 5-speed manual transmission with gearbox type 016G (gear number MB / MX)

Diagram ref no 2
Special Order item
99905902702
Product Information
Product Information
Rear left and right differential carrier bearing.

porsche

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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99905902702
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99905902702
99905902800

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Rear left and right differential carrier bearing.
This tapered roller bearing, also known as a differential carrier bearing, is used in the rear output assemblies of the differential and manual transmission on various classic Porsche models. Engineered as a precise OE replacement, it meets the original Porsche specifications for dimensions, load capacity, and tolerance. The bearing installs directly without modification, restoring proper carrier alignment, support, and smooth drivetrain operation.
Sold individually.

Fits:
Porsche 911 1969-1971 * with magnesium pressure cast housing
Porsche 911 1972 - 1989
Porsche 912 1969 * with magnesium pressure cast housing
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

Diagram ref no 8

•  Function: This bearing supports and aligns the differential carrier or manual transmission rear output shaft, allowing smooth rotation under load and controlling radial/axial movement of the carrier assembly. It ensures the differential or transmission output runs true, quietly and with minimal friction.

•  Position on Car: Usually located in the manual transmission/differential rear housing (for example in the rear of the 911 manual gearbox, or the transaxle/differential carrier area). It may serve as the bearing between the carrier housing and the output shaft or differential ring-gear carrier.

  This part is critical for proper gear meshing, quiet running, bearing life and overall driveline integrity.

With age and use, the bearing can develop wear in its rollers/races, looseness, noise, increased friction, or misalignment. A worn bearing may lead to drivetrain noise, vibration, premature gear or bearing damage, loss of efficiency, or catastrophic failure. The bearing supports the differential carrier output shaft – incorrect bearing performance can result in excessive play, wobble, and stress on neighbouring components.

When to Replace:
  During a differential or transmission rebuild, where the carrier, output shafts or bearings are being replaced — it’s best practice to install new bearings.
  If you detect noise (growl, whine, hum) coming from the rear differential or output area, particularly under load or at higher speed. If there is measurable play / movement in the differential carrier or abnormal backlash in the gearset. If you notice metal debris, “bearing-noise” or vibration emanating from the drivetrain output / differential area. 

  When you upgrade or service the manual transmission/differential – matching new components with new bearings ensures optimum alignment, longevity and performance.

Replacing this bearing means you restore correct support and alignment, minimise noise, protect the differential and improve durability. This part is critical for proper gear meshing, quiet running, bearing life and overall driveline integrity.



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99905902702
99905902700
99905902702
99905902800

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Special Order item
90133256111
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Product Information
Thrust washer limited slip differential. 
Sold each - 2 required per car

porsche

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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90133256111
90133256111

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DISPLAYING 1 to 8 (of 8 products)
About Rear Differential

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.

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