BMW E46 M3 & Z4M rear differential front mount bush PFR5-4621

Powerflex PFR5-4621 replaces the OEM rubber bush (33172282484) on the front of the rear differential for BMW E46 M3 (2000-2006) and Z4M (2006-2008).

It’s a fast-road and track-day upgrade: polyurethane reduces wheel hop, sharpens rear-end response, and improves traction on corner exit.

• Direct-fit replacement - no modifications needed
• Oil- and heat-resistant compound outlasts rubber
• Lifetime warranty direct from Powerflex