Vibration damper. Porsche 911 1978-89 - 91137517501
91137517501
Vehicle Group
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Information
Vibration damper.
Fits:
Porsche 911 1978-86 CABRIO
Porsche 911 1987-89 CABRIO / SPEEDSTER
Diagram ref no 18
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91137517501
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Fits:
Porsche 911 1978-86 CABRIO
Porsche 911 1987-89 CABRIO / SPEEDSTER
Diagram ref no 18
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Related, superseded, cross reference or alternative numbers for comparison.
91137517501
91137517501
91137517500
93037501101
930.375.011.01
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Price: €209.61
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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.
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98737502305
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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
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€115.42
Now €103.88
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Vehicle Group
- 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 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- 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
Information
Engine Mount Stop.
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
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9A137525701
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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
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9A137525701
9A137525701
98737525503
98737525505
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Price: €27.18
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12 Month Warranty
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Vehicle Group
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Information
Engine Suspension Bracket.
Related reference numbers
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9A137502322
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Fits:
Porsche 987 Boxster / S 2009-12
Porsche 987C Cayman / S 2009-12
Diagram ref no 2
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9A137502322
9A137502322
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Price: €189.43
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