BMW E36/E46 M3/Z4M Polyurethane Differential Cover Bushings - 33171134872
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BMW E36/E46 M3/Z4M Poly Differential Cover Bushings - 33171134872
If you have ever been in your car and put it in first gear or take off from a dead stop, you may have heard and felt a loud “thud” coming from the trunk area of the car. This is a sure sign that your differential mounting bushings are worn out or failed. If you speak in BMW part numbers, then that's 33171134872. These mounts will help eliminate the slop and play in the differential mounting. This equates to better power transfer to the ground and a more secure feeling in the rear of your car under hard use.
Price is for a pair (2 units). Enough to do 1 car.
What cars will these bushings fit?
- 1992-1999 E36 (NOT TI)
- 2001-2006 E46 M3
- 2007-2008 Z4 M
The solid Delrin version of these mounts are available HERE
SHOULD I USE POLY OR DELRIN TO MOUNT MY DIFFERENTIAL?
We have this diff bushing available in 80a (soft poly), 95a (hard poly) and fulll on delrin. The stock e36 rear diff bushings are meant for comfort. It's meant to be quiet, so BMW allows for little bit of movement for the sake of comfort. However, with its "floating" design it can fail under normal street use let alone any kind of performance driving. So we have the perfect solution. 80a soft poly is for that OEM + feel. That means you want a subtle upgrade for your street e46 without to much of a compromise in comfort, these are a happy medium. 80a are designed for the street enthusiast. 95a is great for dual purpose aggressive street and track applications. Delrin bushings are generally best for race application only.
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