Your OE diff has probably taken a beating at this point. CNC-machined from billet aluminum with integrated cooling fins, added fluid capacity, and reinforced mounting tabs, it’s the upgrade your E46 M3 deserves! Tracking? Easy. Drifting? Cake. Daily Driving? Solid. Look this up on our site by using this product ID: T30497166, or you can give one of our dedicated BMW enthusiasts help you out. #turner #turnermotorsport #tms #e46m3 #m3 #e46