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- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Engine
Mount & Hardware Kit
This complete engine mount and hardware kit includes left and right OE Match engine
mounts along with the correct mounting hardware. Designed as a direct-fit
replacement, the kit restores proper engine alignment, stability, and vibration
control. By replacing both mounts and fasteners together, you ensure maximum
reliability and secure installation.
Fits:
Porsche Cayenne S 4.5L V8
2003-06
Porsche Cayenne Turbo 4.5L
2003-06
Porsche Cayenne Turbo S 4.5L
2006>>
Porsche Cayenne S/GTS 4.8L
2007-10
Porsche Cayenne Turbo / Turbo S
4.8L 2007-10
What the
Products Do
- Engine Mounts: Cushion the engine against vibrations, reduce cabin noise, and hold the engine securely in place during acceleration, braking, and cornering.
- Mounting Hardware: Provides the secure fastening required to keep mounts properly torqued and aligned, preventing unwanted movement or loosening over time.
Together, these components keep your engine stable, smooth, and securely mounted to the chassis.
Symptoms of
Worn or Failing Engine Mounts
- Excessive vibration in the cabin or steering wheel
- Clunking or knocking noises during acceleration, braking, or gear changes
- Visible sagging, cracks, or separation in the rubber mounts
- Engine movement when shifting between drive and reverse
- Uneven alignment of engine components
Common
Reasons for Failure
- Heat & Age: Rubber within the mounts deteriorates and hardens over time due to constant exposure to engine heat.
- Stress & Load: Aggressive driving, heavy loads, and constant torque stresses accelerate mount wear.
- Oil Leaks: Oil contamination weakens the rubber and causes premature cracking or separation.
- Hardware Fatigue: Original nuts and bolts can stretch, corrode, or lose proper torque over repeated heat cycles.
Why Replace
as a Kit?
- Ensures balanced support by replacing both mounts at the same time.
- Fresh hardware guarantees secure fitment and prevents premature loosening.
- Restores factory-level comfort, reducing vibrations and noise.
- Prevents engine misalignment, which can damage exhaust connections, driveshafts, or transmission mounts.
- Saves on labour costs by doing the full job at once rather than piecemeal replacements.
Ideal For: Preventive
maintenance, resolving drivetrain vibrations, or refreshing the engine bay
during major service.
Diagram ref no 2, 5, 6 and 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
ENGMTGKIT955T
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
Position: center engine mount (the central mount that locates the engine fore/aft and resists torque).
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
Replace the part when it has lost its ability to control engine movement and damp vibration. Typical triggers to replace the centre mount include:
- Hard clunk or bang on acceleration, deceleration or gear changes (engine shifting against chassis).
- Excessive vibration into the cabin, especially at idle or specific RPM bands.
- Visible damage — torn, separated rubber, oil-soaked or collapsed mount/bushing, or corrosion of mating faces.
Common issues & failure causes
- Rubber deterioration: age, heat cycling and mechanical fatigue cause the rubber to harden, crack or de-bond from the metal, reducing isolation and allowing increased engine movement.
- Fluid contamination: oil or coolant leaks accelerate rubber breakdown (softening or swelling), commonly seen on older engines where leaks occur.
- Mechanical shock / abuse: repeated hard launches, aggressive shifting or collisions can cause sudden mount failure or promote early fatigue.
- Bracket wear / corrosion: the bushing may be fine, but the aluminium bracket can crack, corrode, or the bushing may need pressing into a worn bracket — which is why some techs prefer replacing the full assembly.
This product supersedes Porsche's old part numbers:
- 98737502304
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98737502305
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 987 Boxster / S 2005-08
Porsche 987 Boxster / S 2009-12
Porsche 987C Cayman / S 2005-08
Porsche 987C Cayman / S 2009-12
This product supersedes Porsche's old part numbers:
- 98737525503
- 98737525505
Price is for each.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A137525701
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Fits:
Porsche 987 Boxster / S 2009-12
Porsche 987C Cayman / S 2009-12
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A137502322
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
Fits:
For cars WITH Dynamic engine mount (PADM) - option code: I140
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman 2014-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98137505909
The product you are viewing cross references to these numbers