BMW M2 M3 M4 Rear Diff Front Mounting Poly Bush Inserts from Powerflex
Rear Differential Front Mounting Bush Inserts x 4
BMW M2 F87 M3 F80 M4 F82
Palmersport helped with the development of these parts. They run a fleet of rental M3/M4's and have experienced these bushes failing causing the diff to move and knock. Their cars are used extremely hard so they discovered the problem very quickly but it is obvious that this will become a common problem on track cars or as they age. Solve the problem before it occurs or simply tighten up the diff location using POWERFLEX Bushing Inserts.
PFR5-4027 is an insert fits into and fills voids in each of the original bushes in rear diff front mounting bracket OE number: 33172284774. Each insert includes support washers and is a fast way to to increase the stability of the rear diff on bushes that are not worn or perished. For a replacement bush please use PFR5-4025.