Gearbox Mount Bushings Set (G50). Porsche 911 87-89 G50  ❭  91137503110

Gearbox Mount Bushings Set (G50).
Gearbox Mount Bushings Set for Porsche 911 G50 (1987–1989). This rubber mount set restores gearbox stability, reduces vibration, and maintains proper drivetrain alignment under load.
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:

• Support & locate the gearbox - The mounts hold the transmission housing securely to the chassis or subframe, maintaining alignment between the gearbox and the driveshafts.
• Dampen vibration & isolate noise - The rubber or elastomer in the bushings absorbs vibration from the transmission and drivetrain, preventing harshness from transferring into the cabin.
  
• Limit movement under torque - Under acceleration, deceleration, or shifting loads, the gearbox wants to twist or shift slightly. The mount bushings resist that motion, constraining it to acceptable levels.
  
• Maintain geometry & protect components - A stable mount ensures the angular relationships and alignment of the drivetrain (driveshafts, couplings, mounts) remain correct under load.
  
  

Symptoms / Signs Of Worn Or Failed Mounts:

• Clunking, thuds or knocks from the gearbox area when shifting or under throttle
  
• Increased drivetrain vibration felt in the cabin
  
• Loose or laggy gear shifts, or slight misalignment registering as “play”
  
• Excess movement / twist of the gearbox under load
  
• Stress or wear on driveshafts, universal joints, or coupling components
  
• Noise under load changes — e.g. when engaging or releasing throttle
  
  

Why Replacement Matters:

• Restores drivetrain stability and response — tighter mounts reduce slack that dulls shift feel and throttle response
  
• Protects other drivetrain parts — controlling movement reduces undue stress on joints, couplings, and shafts
  
• Maintains alignment & lug angles — consistent mounts help preserve correct geometry even under load
  
• Eliminates noise & vibration due to degraded bushings
  
• Ensures proper operation — a failing mount can cause accelerated wear or even damage
  
• Maintains value & reliability — restoring mount integrity is important for longevity, performance restoration, and driver satisfaction

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91137503110

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