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Your Vehicle  //  Porsche  //  928 (1978-1995)  //  928S 4.7L 1981-83
Porsche928 (1978-1995)928S 4.7L 1981-83Gearbox / Transmission

Gearbox Mounts

Gearbox Mounts

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Stud M10 x 83 engine and gearbox mounting. Porsche 986 / 996 / 997.1 / 997.1 turbo / 987 - 99906110609, 99906110601
2
Stud M10 x 83 engine and gearbox mounting. Porsche 986 / 996 / 997.1 / 997.1 turbo / 987
Special Order item
99906110601
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Product Information
Stud M10 x 83 engine and gearbox mounting. 



Fits:
Porsche 996 - 1997 to 2004
Porsche 997.1 -  2005 to 2008
Porsche 997.1 turbo - 2007 to 2008
Porsche 987 Boxster / Cayman - 2005 to 2012

Click 'Zoom in' for large parts diagram.
Diagram ref no 6



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99906110601
99906110609
99906110601

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Transmission mount. Porsche 928 / 928S / 928S2 / 928S4 / 928GT / 928GTS 1978-95 - 92837504516 - URO-012514
4
Transmission mount. Porsche 928 / 928S / 928S2 / 928S4 / 928GT / 928GTS 1978-95
92837504516/1
Product Information
Product Information

The OE Match transmission mount for Porsche 928 supports the gearbox within its mounting assembly, helping maintain its position while controlling drivetrain movement and vibration.

Fits

  • Porsche 928 (1978 – 1995)

Check fitment for your specific vehicle (model, year, engine) before ordering. Confirm the transmission specification and original part reference as part of this check.

Diagram ref no 2

What Is This Part?

A transmission mount is a supporting connection between the gearbox assembly and the vehicle's mounting structure. It holds the transmission in its intended position while allowing controlled movement as drivetrain loads change. Its vibration-isolating role also limits the transmission of drivetrain vibration into the body. A deteriorated mount can therefore contribute to vibration or movement even when the gearbox itself is functioning correctly. 

What Does This Part Do?

  • Supports the gearbox: Forms part of the mounting arrangement that holds the transmission in position.
  • Controls movement: Restrains excessive displacement as drivetrain loads change.
  • Isolates vibration: Helps limit vibration passing from the drivetrain into the vehicle body.
  • Maintains positioning: Supports the transmission's intended relationship with adjoining drivetrain components.

    These supporting and isolating functions work together; deterioration can affect both gearbox positioning and the vibration felt inside the vehicle. 

    Why Replace This Part?

Age, repeated loading and temperature changes can reduce a mount's ability to support and isolate the transmission. Cracking, separation or collapse can allow more movement or transmit more vibration into the body. Replacement is appropriate when inspection confirms deterioration that affects the mount's function, rather than simply because a noise or vibration is present. 

Inspect the other mounts, brackets and fixings at the same time. Loose hardware or damage elsewhere in the mounting assembly may need attention alongside the mount. Gearbox removal provides a useful opportunity to inspect these components, but does not by itself establish that every mount needs replacing.

When to Replace This Part?

  • Visible deterioration: Cracking, separation or collapse in the existing mount.
  • Damaged mounting points: Broken brackets, damaged fixings or poor seating that prevents secure installation.
  • Clunks on load changes: Knocking when taking up drive or changing between acceleration and overrun warrants inspection.
  • Increased vibration: New or worsening cabin vibration should prompt checks of the complete mounting assembly.
  • Excessive movement: Confirmed abnormal gearbox movement requires investigation of the mounts and their attachments.

These are inspection indicators, not proof that this mount alone is responsible. 

Where Is This Part Fitted?

Location: At the transmission mounting points around the rear-mounted transaxle assembly of the Porsche 928, connecting the gearbox assembly to its supporting structure.

FAQs

  • Will replacing this mount cure difficult gear selection?
    Only if mount deterioration is contributing to the problem. A sagging mount can affect linkage positioning, but the clutch, linkage and gearbox also need checking. 
  • Should the other mounts be checked?
    Yes. Inspect their condition and the associated brackets and fixings before deciding which components require replacement.

    Product Summary
  • Product: Transmission mount.
  • Brand: OE Match.
  • Part number: 92837504516.
  • Purpose: Supports gearbox positioning and controls drivetrain movement and vibration.


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92837504516
92837504516

The product you are viewing cross references to these numbers
Transmission mount. Porsche 928 78-95 - 92837504516 - URO-012514
2
Transmission mount. Porsche 928 78-95
Special Order item
92837504516
Product Information
Product Information
Transmission mount.

Fit:
Porsche 928 (1978 - 1982)
Porsche 928 S (1980 - 1986)
Porsche 928 S4 (1987 - 1991)
Porsche 928 GTS (1992 - 1995)

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92837504516
92837504516

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 products)
About Gearbox Mounts

Porsche Gearbox Mounts | Stability, Precision & Reduced Drivetrain Vibration

Gearbox mounts (also known as transmission mounts) are essential components that secure your Porsche’s gearbox to the chassis while isolating vibration and absorbing torque movement. These mounts play a crucial role in maintaining drivetrain alignment, smooth shifting, and overall driving comfort.

At Design911, we supply high-quality gearbox mounts and transmission mounting kits engineered to meet or exceed original performance specifications. Constructed from advanced rubber, polyurethane, or hydraulic materials, each mount provides the perfect balance of flexibility and strength — ensuring your Porsche maintains stable, refined performance under both road and track conditions.

Whether you’re restoring a classic Porsche or maintaining a modern performance model, our gearbox mounts deliver long-lasting stability, improved handling, and reduced drivetrain noise and harshness.

What Do Gearbox Mounts Do?

Gearbox mounts act as the vital connection between your Porsche’s transmission system and chassis, absorbing torque and vibration while maintaining alignment under load.

Core Functions:

  • Secure the gearbox in place under acceleration, braking, and cornering.
  • Absorb vibration and noise from the drivetrain.
  • Maintain correct driveshaft and linkage alignment.
  • Prevent excess movement that can stress surrounding components.

Without properly functioning gearbox mounts, excessive drivetrain movement can lead to harsh shifting, vibration, and even damage to exhaust, linkage, or driveshaft components.

Why Do Gearbox Mounts Fail or Wear Out?

Over time, gearbox mounts degrade due to exposure to engine heat, torque stress, and environmental factors such as oil contamination or moisture.

Common Causes of Failure Include:

  • Rubber deterioration or cracking from heat and age.
  • Hydraulic fluid leakage in fluid-filled mounts.
  • Metal fatigue in high-performance or heavy-load use.
  • Oil contamination softening rubber compounds.
  • Continuous torque stress from aggressive acceleration.

As mounts weaken, you may experience clunking noises, drivetrain vibration, gear lever movement, or difficulty shifting — all signs that your gearbox mounts need replacement.

Why Replace or Upgrade Your Gearbox Mounts?

Replacing worn gearbox mounts restores drivetrain stability, smoother shifting, and reduced vibration. Upgrading to reinforced or performance mounts enhances control and torque response, especially on tuned or track-driven Porsches.

Key Benefits:

  • Restores smooth, vibration-free gear changes.
  • Prevents drivetrain movement and component stress.
  • Improves handling precision and throttle response.
  • Reduces noise, vibration, and harshness (NVH).
  • Available in rubber, polyurethane, and performance-spec designs.
  • Ideal for maintenance, upgrades, or complete gearbox servicing.

Replacing mounts in pairs ensures balanced performance and consistent driveline alignment.

Highlights

  • Premium Porsche gearbox and transmission mounts.
  • Engineered for strength, durability, and vibration reduction.
  • Direct-fit replacements for Porsche 911, Cayman, Boxster, and others.
  • Reinforced designs for performance or track applications.
  • Reduces stress on transmission and drivetrain components.
  • Essential for smooth shifting, refinement, and drivetrain longevity.       

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