Built specifically for the Spec E46 race class (E46 330i platform), the Diffsonline-Spec Racing Differential is the best performing diff you can put in your car. In a spec class where every little bit matters, and enough power to really push the performance of the limited slip unit, this differential is our preferred package.
- 4-disc design (without the typical fragile cut cap) gives you more active surfaces for smother and quicker engagement/disengagement, resulting in better handling turn entry and power-down
- Ramp angles optimized for class power and grip levels
- Additional friction surfaces also increase ramp effectiveness to allow for less preload lock (better mid-corner speed)
- More discs spread wear for longer rebuild intervals
- All units built to 3.46 ratio and 330i CV-style input flange.
$500 core charge will be refunded upon receipt of your rebuildable core*. Core MUST be received within two weeks of delivery of replacement unit!
*The ability to rebuild the returned differential will be decided by the differential builder.
Core return Instructions:
Drain and clean differential. Remove your aluminum cover and keep for your new diff (DO NOT SHIP WITH A COVER). Place diff in plastic bag (heavy duty trash bag will work) and package in the foam/box your new diff arrived in.
Place a printed copy of your invoice in the box and return core to:
ATTN: MSW Core Return
190R Main St Unit 1
Wilmington, MA 01887
REM is a registered trademark of REM Chemicals Inc. registered in the U.S. Patent and Trademark Office.
E46 (99-05) > 330Ci
E46 (99-05) > 330i