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Category Filter
Engine mount. Porsche 986 Boxster 1997-04 / 987 Boxster 2005 > / 987C Cayman 2006 > - 98737502305
98737502305/1
Vehicle Group
- 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
Information
Engine mount Part number 987.375.023.05 (often written 98737502305) is
the centre engine mount / mount insulator used on mid-engine Porsche
Boxster/Cayman models, commonly fitted to late 986 and 987 Boxster / early 987
Cayman applications. The item is offered both as the complete mount and bracket
assembly and as a replacement bushing/insulator that must be pressed into the aluminium
bracket.
Fits:
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Related, superseded, cross reference or alternative numbers for comparison.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
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
98737502304
98737502305
98637502307
9863750230
98737502303
The product you are viewing cross references to these numbers
Price: €118.41
Arriving soon
Related products
Vehicle Group
- 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
Information
Engine mount
Replaces OEM part number:
477199301 (left) and 477199303 (right)
Fits:
Porsche 924
Replaces both the conventional rubber (LHS) and steel spring (RHS) mounts on the 924 with a durable rubber inserted mount in a strong steel cage giving a direct replacement for the originals. The mount design controls engine movement by less deflection than the original thereby giving the car a 'tighter' feel and reducing stress on exhaust and other ancilliaries under 'performance' driving conditions.
Pleas note: usage of these mounts give an tighter/sportier feel which will have an slight effect on driver comfort on an urban driving cycle.
PRICE IS FOR SINGLE MOUNT
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
POR174M
The product you are viewing cross references to these numbers
Replaces OEM part number:
477199301 (left) and 477199303 (right)
Fits:
Porsche 924
Replaces both the conventional rubber (LHS) and steel spring (RHS) mounts on the 924 with a durable rubber inserted mount in a strong steel cage giving a direct replacement for the originals. The mount design controls engine movement by less deflection than the original thereby giving the car a 'tighter' feel and reducing stress on exhaust and other ancilliaries under 'performance' driving conditions.
Pleas note: usage of these mounts give an tighter/sportier feel which will have an slight effect on driver comfort on an urban driving cycle.
PRICE IS FOR SINGLE MOUNT
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
POR174M
477199301
477199303
The product you are viewing cross references to these numbers
Price: €101.15
In stock
Vehicle Group
- 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
Information
Gearbox mount.
Note: use in pairs only. Sold each.
Fits:
Porsche 924 1976-85
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477399153J
The product you are viewing cross references to these numbers
Note: use in pairs only. Sold each.
Fits:
Porsche 924 1976-85
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477399153J
477399153J
The product you are viewing cross references to these numbers
Price: €585.78
In stock
Vehicle Group
- 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
Information
Engine mount with 85HA Shore PU rubber for competition and track use. Sold as single. 2 required per car.
Fits:
Porsche 924
Direct replacement to original left and right engine mount. Giving a tighter feel of the car and taking stress on other components under racing / fast road conditions.
Replaces OEM part number:
477199301 (left) and 477199303 (right)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477199303
The product you are viewing cross references to these numbers
Fits:
Porsche 924
Direct replacement to original left and right engine mount. Giving a tighter feel of the car and taking stress on other components under racing / fast road conditions.
Replaces OEM part number:
477199301 (left) and 477199303 (right)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
477199303
477199301
477199303
The product you are viewing cross references to these numbers
Price: €95.20
In stock