E46 M3 Subframe Reinforcement Repair

Owners of the BMW 3 Series (E46 models) have been reporting cracks and damage in the rear subframe area of their vehicles. The issue was also common on the earlier 3 Series models and unfortunately, have reoccurred with the E46 from 1999-2006. This issue specifically appears in the rear mounting points of the subframe, which can tear out from their position in the sheet metal. This occurs as the rear differential transmits the torsional load from the engine through the subframe, and then, into the chassis of the vehicle. This constant abuse leads to fatigue in the metal, causing cracks and separation from the chassis.

 

The parts used for this repair includes:

 

Active Autowerke (www.activeautowerke.com):

• E46 Subframe / Rear Chassis Reinforcement Kit

 

Powerflex USA (powerflexusa.com):

• BMW E46 M3 Rear Subframe Front Bushing - Street

• BMW E46 M3 Rear Subframe Rear Bushing - Street

• BMW E46 M3 Rear Diff Rear Mount - Street

• BMW E46 M3 Rear Diff Front Mount - Street

Done