AKG Motorsport Differential Bushings, Poly 75D – E90 E92 E82 (Non-M)Product Description These BMW E90 E92 E82 (Non M) Polyurethane (75D) Differential (Diff) Mount Bushings eliminate virtually all differential movement for effective power transfer to the rear wheels. The stock rubber diff bushings deflect as torque moves through the drivetrain, which allows the differential to move. Eliminate virtually all of this movement and allow your diff to operate effectively with our BMW E90 E92 E82 (Non M) poly 75D differential