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Rear Differential
By OE Match
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
Torque tube bushing with bearing 25mm torque tube
(3 bearings needed for torque tube) Porsche does not offer separate torque tube bearings for the 993/964, meaning if the bearings fail, your only option has been to purchase a completely new torque tube. In response, OE Match and our trusted supplier have taken the initiative to design, develop, and manufacture high-quality 993/964 torque tube bearings, now available for individual purchase
Fits:Porsche 964 1989-94
Porsche 993 1995-98
• Clean/sand (with sandpaper) the tube (inner part),
• Lightly lubricate the rubber (acid-free lubricant),
• Ensure the correct installation direction,
• Press against the outer contact surface during installation (only onto the aluminum housing),
• A high installation force will be required (press in with hydraulics)
fits inside diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96442101221X
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- 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 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
- 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 1987-89
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
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99905906400
The product you are viewing cross references to these numbers
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 911 1984-1986 3.2L
- 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 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- 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 968 CS 3.0L 1993-95
OE Match differential output shaft seal, engineered to replicate the original Porsche component that seals the output shaft on the differential housing. It prevents gear oil from leaking out where the drive axles exit the differential - a critical sealing function in the drivetrain system.
Sold each.
Fits:
Porsche 911 Carrera 3.2L 1984 - 1989
Porsche 911 Turbo 3.3 1978 - 1989
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 1998 - 2005
Porsche 986 Boxster 3.2L 2000 - 2004
Porsche 986 968CS 1993 - 1995
Diagram ref no 20
The differential output shaft seal creates a pressure-resistant, low-friction barrier around the rotating driveshaft or axle stub where it exits the differential. It prevents differential oil from escaping the gearbox while allowing rotational movement, helping maintain optimal lubrication of internal gears, bearings, and limited-slip components.
Function: Installed in the differential carrier housing at the output flange, the seal’s elastomer lip bears against the rotating shaft surface, maintaining contact under variable engine speed, gear torque, and temperature conditions. The internal garter spring ensures the lip is held in consistent contact with the shaft surface, helping prevent weeping or drips that can lead to low lubricant levels and accelerated drivetrain wear.
A worn or hard differential output seal can lose its effectiveness over time, leading to leaks, oil drips, and reduced gear oil levels in the differential. Low lubricant can accelerate wear of differential bearings, gears, and limited-slip clutches - ultimately causing expensive internal damage. Replacing the seal with an OE Match component helps preserve proper differential lubrication, reduces contamination of nearby brake and suspension parts with oil, and maintains drivetrain longevity and performance.
When to replace:
• Visible gear oil leakage from the differential area
• Oil accumulating near the rear of the gearbox or under the car
• During differential service or rebuild
• After replacing output shafts/axle flanges
• Preventive maintenance on high-mile vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99911334741
The product you are viewing cross references to these numbers
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
Torque tube bushing with bearing 25mm torque tube
Sold individually (3 bearings needed for torque tube)
Porsche does not offer separate torque tube bearings for the 993/964, meaning if the bearings fail, your only option has been to purchase a completely new torque tube. In response, OE Match and our trusted supplier have taken the initiative to design, develop, and manufacture high-quality 993/964 torque tube bearings, now available for individual purchase
Fits:Porsche 964 1989-94
Porsche 993 1995-98
• Clean/sand (with sandpaper) the tube (inner part),
• Lightly lubricate the rubber (acid-free lubricant),
• Ensure the correct installation direction,
• Press against the outer contact surface during installation (only onto the aluminum housing),
• A high installation force will be required (press in with hydraulics)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96442101221X
The product you are viewing cross references to these numbers
OEMatch Rear Differential — Fit, Function, Confidence
OEMatch rear differentials for Porsche models provide the mechanical link between gearbox and rear wheels, helping distribute torque during cornering and maintain traction. These units influence handling balance and traction across road and track use and are selected for Porsche applications.
Available Types
- Standard open differentials
- Limited-slip differentials (LSD)
- Rebuilt and exchange units
Understanding OEMatch Rear Differential
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original rear differential.
OE (Original Equipment) refers to parts matching original specifications for the rear differential and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM rear differential engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
The rear differential transmits torque from the transmission to the rear axles while permitting different wheel speeds during turns, preserving handling balance and preventing excessive wheelspin. A well-maintained differential supports stable cornering, predictable traction and smoother power delivery.
Benefits Include
- Restores balanced torque distribution for predictable handling
- Improves traction and acceleration out of corners
- Reduces noise, vibration and drivetrain harshness
Why Rear Differential Wear and Fail
- Low or contaminated differential oil causing friction and overheating
- Bearing wear leading to noise or vibration
- Gear tooth pitting, chipping or fatigue from torque overload
- Seal failure allowing lubricant loss and contamination
The Importance of Replacing with OEMatch Rear Differential
Replacing a worn or damaged rear differential restores dependable power delivery and traction, helping to recover the vehicle’s original handling balance. Timely replacement or rebuild reduces the risk of secondary gearbox or axle damage and supports long-term driveline performance on Porsche models.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Made to original-spec dimensions and tolerances for Porsche models
- Suitable for manual, Tiptronic and PDK drivetrains on many Porsche models