Wavetrac Differential

OEM welded diff and ring gearOur 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.

Wavetrac 335i Diff and Install Kit ©2009 Autotech Driveline

 BMW

Wavetrac

Install Kit

 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

 335iS DCT 2009> NEW!

30.309.173WK

30.309.174WK

 135i M/T

30.309.170WK

30.309.171WK

 335i A/T from 9/2007 >

30.309.175WK*

not required

 135i A/T

30.309.175WK*

not required

 135i DCT NEW!

30.309.173WK

30.309.174WK

 


* 30.309.175WK is for 188K type axle with bolted ring gear. No machining is required on above referenced models.

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