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- 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
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Related, superseded, cross reference or alternative numbers for comparison.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
Porsche Engine & Gearbox Mounts - Performance Drivetrain Control Upgrades
Engine and Gearbox Mounts are critical drivetrain components that secure the engine and transmission to the chassis while managing torque reaction, vibration, and movement. In performance-focused or higher-mileage Porsche vehicles, upgraded mounts help maintain correct drivetrain alignment, improve power delivery, and protect surrounding components under load.
Available from Design911, this range of Porsche engine mounts and gearbox mounts is designed for tuned, track-driven, and enthusiast-owned vehicles where improved control and durability are essential.
What Do Engine & Gearbox Mounts Do?
Engine and gearbox mounts stabilise the drivetrain while isolating vibration from the cabin.
Core Functions:
- Secure the engine and gearbox to the chassis.
- Control drivetrain movement during acceleration and braking.
- Absorb vibration and torque reaction.
- Maintain correct driveline and exhaust alignment.
- Improve throttle response and gear shift precision.
High-quality mounts are essential for consistent performance and long-term reliability.
Why Do Engine & Gearbox Mounts Fail?
Standard factory mounts are designed for comfort and daily
driving, and can deteriorate over time or under increased load. Common failure
causes include:
- Rubber degradation from heat and age.
- Excessive torque from tuned or modified engines.
- Repeated high-load acceleration and hard gear changes.
- Track use or aggressive driving.
- Oil contamination causing mount softening or collapse.
When mounts fail, excessive engine movement can lead to poor shifting, drivetrain knock, exhaust stress, and accelerated wear of engine components.
Why Upgrade Engine & Gearbox Mounts?
Upgraded performance mounts are designed to handle higher loads while maintaining drivetrain control.
Upgrade Benefits:
- Reduced engine and gearbox movement under load.
- Improved drivetrain alignment and stability.
- More precise gear changes and throttle response.
- Increased reliability for tuned and track-driven engines.
- Longer service life compared to standard rubber mounts.
Upgrading mounts helps protect the drivetrain while enhancing driver confidence and vehicle responsiveness.
Highlights
- Porsche performance engine and gearbox mounts
- Improved drivetrain stability and control
- Designed for tuned, track, and enthusiast vehicles
- Reduced vibration and torque movement
- Essential upgrade for high-output engines