The team at Turner Motorsport has some serious passion for the E46 M3! 😍 The result of that serious passion, you may ask? A serious performance upgrade for the E46 M3! Meet the Reinforced Billet Aluminum Differential Cover. Designed for drivers pushing their cars harder than BMW ever intended. This cover isn’t just about strength, though the billet aluminum construction delivers that in spades. It’s about keeping your rear end cool and under control, even in the harshest motorsport conditions. With increased fluid capacity, improved cooling fins, upgraded fill and drain plugs, and provisions for an external oil cooler, it’s a no-compromise solution for track builds and aggressive street cars alike. Search ES#4818925 on our site to get the most out of your E46 M3. It’s in stock and ready for action or you could always give one of our handy dandy sales staff a call as well! PS: We know the original diff cover isn’t exactly a showpiece. But that just proves the point: on aging platf...