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Gearbox bracket support Hexagon-head bolt washer. Porsche 993 C2 TIPTRONIC ❭ 90002500703
- Porsche 993 (911) C2 1994-97
OE Match replacement Hexagon-Head bolt washer designed for use with the gearbox/bracket support on Porsche 993 Carrera 2 (C2) models equipped with the Tiptronic automatic transmission. It provides proper load distribution under fastener heads in the transmission support area, ensuring secure mounting and stable drivetrain alignment.
Sold individually
Fits:
Porsche 993 C2 1994 - 1998 TIPTRONIC (Gearbox type A50.04 / A50.05)
Diagram ref no 16
This washer is ideal for service during gearbox mount repairs, bracket replacement, or when refreshing transmission support hardware on 993 C2 Tiptronic vehicles. It installs directly under the head of the corresponding hexagon-head bolt, improving clamping integrity and helping preserve correct transmission position.
The gearbox bracket support washer provides a stable bearing surface for the hexagon-head bolt, distributing clamping force evenly and protecting mounting surfaces from deformation. This helps maintain proper torque and supports reliable mounting of the gearbox support bracket.
Function
• Distributes clamp load under gearbox bracket hex bolt
• Protects bracket and chassis surfaces from fastener stress
• Helps maintain correct transmission support alignment
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90002500703
The product you are viewing cross references to these numbers
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- 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 Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Sold as a set with (2) bushings included per kit to complete a single car.
Type: Racing / Motorsport
Fits:
Porsche 996 C2 / C4 / C4S 2002-2005 TIPTRONIC only
Porsche 996 Turbo 2001-2005 MANUAL & TIPTRONIC
Porsche 996 GT3 MKI & MKII 2000-2005 MANUAL only
Porsche 997 C2 / C4 / C2S / C4S TIPTRONIC only
Porsche 997 Turbo MKI 2006-2009 MANUAL & TIPTRONIC
Porsche 997 Turbo MKII 2010-2013 MANUAL only
Porsche 997 GT3 MKI & MKII 2007-2013 MANUAL only
HD transmission mounts replace your OEM transmission carrier bushings with our 25% stiffer bushings**. These units install the same as factory bushings and will eliminate clunks and driveline slop often associated with original rubber units. These high quality units feature aluminum center bushings and splined outer races filled with harder durometer rubber for perfect fitment and long service life. A perfect answer for those who want less driveline play but don't want harshness associated with semi solid and solid mounts.
Fits inside Porsche OE part 99737503303, or 99637503303
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99737503303
The product you are viewing cross references to these numbers
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
Sold as a set with (2) bushings included per kit to complete a single car.
Type: Road use

Fits:
Porsche 996 C2 / C4 2002-05 TIPRTONIC
Porsche 996 TURBO 2001-05
Porsche 996 GT3 2000-05
Porsche 997 C2 / C4 2005-08 TIPTRONIC
Porsche 997 TURBO 2007-09
Porsche 997 TURBO 2010-12 (G97.55)
Porsche 997 GT3 2007-11 (G97.90)
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99737503303KIT
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
The Gearbox Mount Bush, Manual and PDK Gearbox is a OE MATCH Porsche 997.2 drivetrain component designed to support and stabilise the transmission within the vehicle’s chassis. Suitable for both manual and PDK gearboxes, this bush forms part of the gearbox mounting system, helping to isolate vibration and control movement during operation.
Fits:
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
What This Product Does:
- Supports and stabilises the gearbox within the chassis
- Absorbs vibration and drivetrain movement
- Maintains correct alignment of transmission components
- Reduces noise and harshness (NVH) for improved comfort
- Improves gear shift quality and overall drivetrain response
Symptoms Of Wear Or Failure:
- Clunking or knocking noises during gear changes or acceleration
- Excessive vibration felt through the cabin
- Gearbox movement or shifting under load
- Rough or inconsistent gear changes
- Drivetrain misalignment affecting performance
- Visible cracking or deterioration of the bush
Why Replacement Matters:
- Restores gearbox stability and alignment
- Reduces vibration and noise for a smoother driving experience
- Improves gear shift precision and responsiveness
- Prevents damage to surrounding drivetrain components
- Ensures long-term durability of the transmission mounting system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A137505502
The product you are viewing cross references to these numbers
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