034 Motorsports Differential/Transmission Mounts

The 034-509-4008 Differential/Transmission Mounts by 034 Motorsports are precision-engineered components designed specifically for early Audi models, including the B3 Audi 80/90/Coupe Quattro, Audi UrQuattro, Audi 4000/5000, Audi 100/200, and Audi S2/RS2. These mounts are built for performance and durability, making them an ideal choice for track enthusiasts and spirited drivers alike.

Construction and Design

Manufactured from high-quality billet aluminum and Delrin, these mounts provide a robust solution to drivetrain stability. The combination of materials ensures that the mounts are lightweight yet incredibly strong, reducing drivetrain slop and enhancing power transfer during aggressive driving conditions.

Performance Benefits

• Rebuildable design for long-term use
• Includes new high-grade metric hardware for secure installation
• Significantly decreases differential and transmission movement under load
• Improves shifting feel, providing a more connected driving experience
• Complete drop-in replacement for factory mounts, requiring no modifications
• Sold individually; two mounts required per vehicle

Noise, Vibration, and Harshness (NVH)

It's important to note that the Motorsport mounts will increase noise, vibration, and harshness (NVH) within the cabin compared to the factory mounts. For those who prioritize a quieter ride, consider the Density Line mounts, which are better suited for street-driven applications.

Fitment

• Audi 80/90/Coupe Quattro B3 (1987-1992)
• Audi UrQuattro
• Audi 4000/5000 (1978-1988)
• Audi 100/200
• Audi S2/RS2
• Compatible with later B4 chassis vehicles using B4/B5 style rear differential mounts

OEM Replacement Part Numbers

• 857 599 431
• 431 399 151D

Enhance the performance and reliability of your Audi's drivetrain with the 034-509-4008 Differential/Transmission Mounts. These mounts are designed to deliver a more responsive driving experience, ensuring that your vehicle handles the demands of both daily driving and track use with confidence.