Wavetrac Differential - BMW E38/E39/E46/E60/E90/F21 DIESEL (215K) BOLTED OEM RING GEARS r=2.35-2.81 including: E60 525d to 3/07, 530d, 535d E46 330d MT E39 530d MT E38 740d E90 325d MT to 3/2007, 330d MT tp 1/2007 F21 125d AT F32 430d (2.56)

Wavetrac®: Designed from a clean sheet using state-of-the-art knowledge and engineering to be a better differential than any other. It uses a patented design to improve grip in low traction conditions.

Wavetrac®: Gives you quicker acceleration and faster cornering by driving both drive wheels instead of just one. And, it offers improved no-load performance when compared to other helical gear differentials on the market.