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Rear Differential
By OE Match
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- 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

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>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
016409399B
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
Fits:
Porsche 986 Boxster 2.5ltr / 2.7ltr - 1997 to 2002 (5 Speed)
Porsche 987.1 Boxster 2.7ltr - 2005 to 2008 (5 Speed)
Porsche 987 Cayman 2.7ltr - 2006 to 2008 (5 Speed)
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
002517185M
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
The Differential Output Shaft Seal – Cover Side is a OE MATCH drivetrain sealing component designed to prevent gear oil leakage from the differential where the output shaft exits the differential housing. This seal helps maintain proper lubrication inside the differential while protecting internal gears and bearings from contamination.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Diagram Ref No 3
What This Product Does:
- Sealing the differential output shaft opening
- Preventing gear oil leaks from the differential housing
- Maintaining proper lubrication of internal gears
- Protecting internal components from dirt and debris
- Supporting smooth and reliable drivetrain operation
Symptoms Of Wear Or Failure:
- Gear oil leaks near the differential or axle area
- Oil spots under the vehicle
- Low differential fluid levels
- Whining or grinding noises from the drivetrain
- Oil residue around the differential housing or driveshaft connection
Why Replacement Matters:
- Prevent gear oil leaks
- Maintain proper differential lubrication
- Protect gears and bearings from premature wear
- Ensure smooth drivetrain performance
- Avoid costly differential repairs or replacement
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98639702700
The product you are viewing cross references to these numbers
-
replacement transmission, transmission case for 986 Boxster G86.00 M481 (5-th Speed Manual Transmission) 1997-04 302-00
-
differential 986 Boxster G86.00/01 1997-04 305-00
-
tiptronic differential, differential housing for 986 Boxster A86.00 1997-99, 986 Boxster A86.05 2000-04 and 986 Boxster S A86.20 2000-04 320-03
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