Now available, the Garagistic E36 polyurethane complete differential mounting kit! This kit contains all 3 of the bushings that you will need to replace the OEM soft rubber units. Have you ever heard a loud thud in the back of your car? Especially when starting into gear from a dead stop? It sounds like something is trying to escape your trunk! This is usually a sign of tired or worn out differential bushings that are allowing your diff to thump against the rear subframe. Replace and upgrade from the factory rubber bushings to these 80A or 95A polyurethane mounts. These bushings will keep your differential under control, allowing better power delivery and reducing slop in the rear end. A must-have for any car making more than factory power, and a great upgrade even for a stock car. Keep that diff under control with Garagistic E36 differential mount bushings!

Replaces OEM Part Numbers: 33171134872 (x2) Diff Cover bushings, and 33171134871 (x1) Subframe mount bushing

Garagistic 14mm Bolt Upgrade

If you plan on doing any serious driving, make sure to click the dropdown and select our Garagistic M14 Bolt Upgrade - a tried and tested solution to weak stock diff bolts! With a 14mm shank and threads that match the factory thread pitch of the holes on your differential, M12x1.5, our diff bolts are a fantastic upgrade that improves both overall strength and fitment, while also eliminating the need to drill and tap your differential to M14.

 Made using class 12.9 steel, it boasts remarkable tensile strength, standing at least 25% stronger than the mediocre medium-strength steel screws used in stock bolts. This impressive enhancement in strength ensures that the bolt can handle the aggressive forces encountered on the track, offering you unmatched durability and performance.

Upgraded M14 Bolt Specifications

• Shank Thickness: 14mm
• Thread Pitch: M12x1.5 (Same as the OEM threaded hole on differential)
• Bolt Grade: 12.9
  
• Coating: Clear Zinc Coated (for rust prevention)

*Note: This upgrade comes with a bushing pre-drilled to 14mm for ease of installation.

Differences Between Poly and Delrin/Solid Bushings In This Application

We offer the Garagistic E36 differential bushing kit in 3 different materials: 80A poly, 95A poly, and solid Delrin. Each material has its intended application and benefits. The 80A poly is the happy medium between upgraded bushings and plush OEM rubber. It is intended for the spirited street driver, and occasional Auto-X and track use. It offers a definite increase in performance with a limited increase in noise transfer and harshness. The 95A is the next tier up on the poly scale, offering a stiffer material than 80A and increased performance to match. If you have a car with a louder exhaust and or a car intended for only weekend use in the canyons or on Auto-X and track circuit this is the bushing for you. Finally, the solid Delrin bushings are for the ultimate in performance. It is designed for the truly hardcore racers and track enthusiasts.

Why should you upgrade to the cover bushing washer?

We drive our E36 and E46 M3 hard on the race track when we compete in events like Bimmer Challenge and occasional drift days. During hard direction changes, fast and sharp turns, and multiple clutch kicks, a lot of movement and abuse is transferred to the bushings that support the rear differential. After years of abuse, we noticed the polyurethane rear differential cover bushings take a significant amount of stress (the same reason why OEM bushings need to be replaced). To prevent these bushings from slipping out due to repeated force, we designed these cup-shaped washers to reinforce the polyurethane differential cover bushings and keep things nice and tight. These washers are for polyurethane bushings only. Not intended to be used for aluminum and delrin bushings.

Fitment

• Fits: All E36 Chassis (EXCEPT TI & Z3)
• Direct Replacement for OEM part numbers:
  • 33171134872 (x2) Diff Cover bushings
  • 33171134871 (x1) Subframe mount bushing