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Gearbox Transmission Bushing Set, Heavy Duty. Porsche 996 / 997 ❭ 99737503303
- 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 GT3 / GT3 RS 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Improve shifting precision and driveline stability with this Gearbox / Transmission Bushing Set.
Designed for Porsche 996 and 997 models, these heavy-duty bushings replace the original soft rubber mounts with a higher-durometer compound and reinforced aluminum cores.
Sold As A Set Of 2.
Fits:
- Porsche 996 C2 3.6L 2002-2005 (Tiptronic Transmission Only)
- Porsche 996 C4 3.6L 2002-2005 (Tiptronic Transmission Only)
- Porsche 996 C4S 3.6L 2002-2005
(Tiptronic Transmission Only)
- Porsche 996 TURBO 2000-05
(Tiptronic / Manual Transmission)
- Porsche 996 GT2 2001-05
(Tiptronic / Manual Transmission)
- Porsche 996 GT3 MKI 1999-02 (Manual Transmission Only)
- Porsche 996 GT3 MKII 2003>> (Manual Transmission Only)
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
(Tiptronic Transmission Only)
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
(Tiptronic Transmission Only)
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
(Tiptronic Transmission Only)
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08 (Tiptronic Transmission Only)
- Porsche 997 MK1 GT3 2007-09 (Manual Transmission Only)
- Porsche 997 MKII GT3 2010-11
(Manual Transmission Only)
- Porsche 997 MKII Turbo 2010-13
(Manual Transmission Only)
- Porsche 997 MKII GT2 RS 2011-13
(Manual Transmission Only)
Fits On To Diagram Ref No 1
What This Product Does:
- Support and Mount the Transmission - They hold the gearbox (transaxle) in place relative to the chassis, keeping it aligned and preventing undesired motion.
- Absorb Vibration & Isolate Noise - The bushings dampen transmission vibration and drivetrain noise, improving comfort.
- Control Drivetrain “Slop” / Play - Stiffer bushings reduce the amount of twist or movement under torque load, minimizing driveline lash or unwanted movement when accelerating, shifting, or off the throttle.
- Maintain Geometry & Alignment - Properly mounted gearbox prevents shifting of driveline angles, which helps protect CV joints, driveshafts, and reduces undue stress elsewhere.
- Clunking, knocking, or banging noises during shifts, on throttle application, or when decelerating
- Driveline lash / slop — a sensation of delay or “slack” before power transfer
- Increased vibration or harshness felt in the cabin, especially under load or gear changes
- Gearbox movement — the transmission may move or twist noticeably when revs / torque change
- Wear on adjacent components — e.g. CV joints, driveshafts, differential support bearings may see accelerated wear
- Restores Sharpness & Responsiveness — by eliminating soft or worn mounts, the drivetrain becomes more responsive and direct.
- Reduces Noise, Vibration & Harshness — a proper bushing absorbs and isolates vibration better than degraded old rubber.
- Protects Other Drivetrain Parts — reduces stress on CV joints, couplings, differential mounts due to movement or misalignment.
- Preserves Safety & Durability — under high torque loads (e.g. hard driving), a weak mount can twist excessively and cause damage.
- Better Handling Feedback — with less transmission movement, throttle transitions and engine braking feel more controlled and precise.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99737503303
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
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

Fits:
Porsche 986 Boxster >>2004
Porsche 987 Boxster 2005-08
Cars with 5-speed manual transmission.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 1 & 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98637508
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 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

Fits:
Porsche 986 Boxster S 2000-04
Porsche 987 Boxster 2005-2008 Tiptronic gearbox
Porsche 987C Cayman 2006-2008 Tiptronic gearbox
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98637504902
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 Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- 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

SET OF 2
AVAILABLE FOR
Porsche 986 Boxster and 987 Boxster / 987 Cayman
FITS MODEL VARIANTS INCLUDING MK.1 & MK.2 with 6 Speed Manual or PDK Transmission.
• The RSS Tarmac Series Performance Transmission Mounts are designed for the Porsche driver who demands the absolute maximum in precision handling, feedback and control from their chassis.
• With factory Transmission mounts, the drivetrain will move independent of the chassis during acceleration, deceleration and cornering loads. This movement can upset the balance of the vehicle and create negative handling effects.
• RSS Performance Transmission mounts minimize these effects by utilizing specialized polyurethane bushings which offer a firmer, more direct driving feel with optimum feedback.
• This upgrade will NOT significantly affect ride quality or cause knock sensor issues commonly associated with solid transmission mounts.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
627
The product you are viewing cross references to these numbers
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