Wavetrac Limited Slip Differential (BMW 335i 135i) 30.309.170WK
Innovative: Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing diff design.
Superior Materials: 9310 steel gears run in case-hardened billet or forged steel bodies. ARP® fasteners used throughout.
Maintenance Free: As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.
Customizable: If desired, you can alter the diff’s behavior to suit your needs using optional components.
Please Note: Limited LIFETIME Warranty: All Wavetrac® differentials include a transferable, Limited Lifetime Warranty.
Our new Install Kit allows fitment of a Wavetrac® differential in late-model rear axles of 135i and 335i models where the ring gear is factory welded to the standard differential.
Since March, 2007 production, BMW has fitted rear axles where the ring gear is welded to the differential carrier. Until now, this process has hindered enthusiast owners’ ability to upgrade, but no longer: Autotech Driveline now offers a precision solution at a reasonable price.
Upon receipt of a customer’s differential/ring gear assembly, the ring gear is separated from the stock diff using CNC equipment. The ring gear is then machined, drilled and threaded to allow bolt mounting to a new Wavetrac® differential. We then return to the customer.
Wavetrac® Differential Customer’s machined ring gear Precision-ground spacer ring Set of 10 ARP® ring gear bolts
For the best possible performance, disassembly of the stock axle, and fitment of the Wavetrac and Install Kit should be performed by one of our Specialist Dealers. This ensures that the condition of the axle can be assessed before modifications are performed, and that the re-assembly is done professionally - ensuring correct gear backlash and bearing end play.
|335i M/T up to 3/2007||30.309.170WK||not required|
|335i A/T up to 3/2007||30.309.170WK||not required|
|335i M/T from 3/2007||30.309.170WK||30.309.171WK|
|335i A/T 3/2007- 9/2007||30.309.170WK||30.309.171WK|
Please Note: *Contact us to setup the mailing of your differential/ring gear assembly if you choose to add the install kit*