BMW Solid Aluminum Differential Mount Bushing Kit – Eliminates Differential Movement, Sharpens Drivetrain Response & Reinforces Rear-End Stability for E46 & E85 Z4 Models | Replaces Part No. 33176770788, 33176751808

Upgrade your BMW’s drivetrain performance with this Solid Aluminum Differential Mount Bushing Kit designed for E46 3 Series and E85 Z4 models. Engineered to replace the factory rubber differential bushings, this performance upgrade significantly reduces differential movement under acceleration, braking, and cornering, helping deliver sharper power transfer and more immediate drivetrain response.

Factory rubber differential bushings are designed to isolate vibration and noise, but over time they can soften, crack, and allow excessive differential movement. That unwanted movement can contribute to driveline slop, wheel hop, delayed throttle response, and inconsistent power delivery. By replacing the factory bushings with precision-machined solid aluminum mounts, drivetrain flex is virtually eliminated for a much more direct connection between the drivetrain and chassis.

Manufactured from high-strength billet aluminum, these solid differential bushings provide maximum rigidity and long-term durability for performance-oriented street cars, track builds, autocross setups, and drift applications. The result is improved rear-end stability, sharper throttle response, more consistent power delivery, and increased driver feedback.

This kit is ideal for enthusiasts looking for maximum drivetrain control and a more connected feel from the rear end.

Designed for direct-fit installation.

Key Features

• Solid aluminum differential mount bushing upgrade
  
• Helps eliminate differential movement and flex
• Improves throttle response and power transfer
• Reduces driveline slop under acceleration
• Helps minimize wheel hop during aggressive driving
• Increases rear-end stability and chassis response
• Precision-machined billet aluminum construction
• Ideal for performance, track, autocross, and drift applications
• More durable than factory rubber bushings
• Direct-fit replacement design

FITMENT:

BMW 3 Series

• E46 Sedan (1999–2005)
• E46 Coupe (1999–2006)
• E46 Convertible (2000–2006)
• E46 Touring (1999–2005)

BMW Z Series

• Z4 E85 Roadster (2003–2008)

Vehicle Applications

• 318i (1999–2005)
• 320i (1999–2005)
• 320d (1999–2005)
• 325i (2001–2005)
• 330i (2001–2005)
• 330d (1999–2005)
• Z4 3.0i (2003–2005)
• Z4 3.0si (2006–2008)

Position

• Rear Differential Mount Bushings

OEM Reference

• Replaces Part No. 33176770788
• Replaces Part No. 33176751808
• Replaces Part No. 33171093175
• Replaces Part No. 33171093565

Please verify your vehicle fitment and OEM part numbers before purchasing.

Upgrade your BMW drivetrain with a premium solid aluminum differential mount bushing kit engineered to deliver maximum drivetrain stability, improved power transfer, and enhanced handling performance for both street and track use.

Please refer to the “Fitment” section in the product description for compatibility details.