Polyurethane Differential Cover Bushings (E36, E46 M3, Early Z4M) Add Aluminum Washer Upgrade:Add Washer Upgrade The front control arm bushings

The front control arm bushings for these cars is also an important maintenance item that should be addressed right away to prevent a possible accident and costly repairs

Just like the E30 before it and the E46 after it

Made of 19 gauge steel Weldable or boltable Weights only 5lbs (as opposed to the spare wheel wells 12lbs + spare tire/rim) - Possible weight savings of 60lbs If made bolt-able

While your in there if you remove the tar in your trunk (which is often mistaken for sound deadening

All of these reinforcements require welding and minor grinding depending on chassis life

Polyurethane Differential Cover Bushings (E36, E46 M3, Early Z4M) Add Aluminum Washer Upgrade:Add Washer Upgrade The front control arm bushingsBMW E36 E46 M3 Early 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