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HD Semi-Solid Gearbox Mount Set (G50). Porsche 911 1987-89 G50 - 91137503110
91137503110/4
Vehicle Group
- Porsche 911 1987-1989 3.2L G50
Information
HD Semi-Solid Gearbox Mount Set (G50).
Fits On To Diagram Ref No 1
What This Product Does:
Symptoms Of Worn Or Soft Gearbox Mounts:
Why Upgrading Matters:
Related reference numbers
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91137503110
The product you are viewing cross references to these numbers
Improve drivetrain precision and shifting response with the HD Semi-Solid Gearbox Mount Set, designed for Porsche 911 models equipped with the G50 transmission (1987–1989).
This high-durometer semi-solid mount set replaces worn factory rubber bushings to deliver tighter drivetrain control, reduced movement, and improved alignment without introducing harsh vibration.
By minimizing gearbox motion under load, it enhances shift feel, stability, and feedback, creating a more connected and confident driving experience.
Sold As A Set Of 2 bushes (4 halves).
Fits:
- Porsche 911 1987-1989 3.2L G50
Fits On To Diagram Ref No 1
What This Product Does:
- The HD version is made from rubber with roughly 25 % higher durometer (i.e. stiffer) than original rubber mounts.
- It fits into the stock mounting brackets / spacers (i.e. “installs in stock transmission mount hangers replacing worn factory rubber”)
- Because it is semi-solid rather than full solid, it retains some vibration isolation while cutting down drivetrain slop.
Symptoms Of Worn Or Soft Gearbox Mounts:
- Thuds, clicks, or knocking noises from the drivetrain, especially under shifting or torque load
- Excessive vibration felt in the cabin or floorboard
- Drivetrain “slop” or delayed response when you apply or remove throttle
- Shifts may feel less crisp due to slight misalignment or movement
- Additional stress on driveshafts, couplings, or mount brackets
- Transmission housing might appear to move or twist during load changes
Why Upgrading Matters:
- Improved Shift Feel & Response — with less drivetrain flex, shifts feel more direct
- Better Drivetrain Alignment Under Load — geometry stays more consistent under torque
- Reduced Clunk / Play — eliminates slack or movement that can degrade feedback
- Durability — stiffer rubber lasts longer, resists deformation, aging, and oil exposure
- Balanced NVH — better than stock in performance use, but not as harsh as full solid mounts
- Plug-and-Play Fitment — designed to use original mount brackets and spaces
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91137503110
91137503109
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Price: €156.60
In stock
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Vehicle Group
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Information
Transmission carrier.
Fits:
Porsche 991.1 Carrera 2012-16 with Gearbox G9100 / CG105 / CG135
Porsche 991.2 Carrera 2017-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 R / GT2 / RS / GT-Speed 2014-21
Click 'Zoom in' for large parts diagram.
Diagram ref no 1.
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99137503904
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Fits:
Porsche 991.1 Carrera 2012-16 with Gearbox G9100 / CG105 / CG135
Porsche 991.2 Carrera 2017-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 R / GT2 / RS / GT-Speed 2014-21
Click 'Zoom in' for large parts diagram.
Diagram ref no 1.
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Price: €147.12
Orderable
Vehicle Group
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Information
Gearbox mount support bracket.
Fits:
Porsche 991.1 Carrera 2012-16 with Gearbox G9100 / CG105 / CG135
Porsche 991.2 Carrera 2017-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 R / GT2 / RS / GT-Speed 2014-21
Click 'Zoom in' for large parts diagram.
Diagram ref no 2.
Related reference numbers
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99137511403
The product you are viewing cross references to these numbers
Fits:
Porsche 991.1 Carrera 2012-16 with Gearbox G9100 / CG105 / CG135
Porsche 991.2 Carrera 2017-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 R / GT2 / RS / GT-Speed 2014-21
Click 'Zoom in' for large parts diagram.
Diagram ref no 2.
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99137511403
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Price: €303.37
Orderable
Vehicle Group
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S 3.0L (420 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
Information
Gearbox mount.
Fits:
Porsche 991.1 - 2012 to 2016 (PDK gearbox)
Porsche 991.2 - 2016 to 2019 (PDK gearbox)
Porsche 991 turbo - 2012 to 2019 (PDK gearbox)
For PDK gearbox types
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99137505500
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Fits:
Porsche 991.1 - 2012 to 2016 (PDK gearbox)
Porsche 991.2 - 2016 to 2019 (PDK gearbox)
Porsche 991 turbo - 2012 to 2019 (PDK gearbox)
For PDK gearbox types
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
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Price: €69.60
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