Wavetrac Differential

OEM welded diff and ring gearSince March, 2007 production, BMW has fitted rear axles where the ring gear is welded to the differential carrier.

Our Install Kits, combined with precision machinework, allow fitment of a Wavetrac® differential in late-model BMW rear axles where the ring gear is factory welded to the standard differential.

 

Upon receipt of a customer’s differential/ring gear assembly, the ring gear is separated from the stock carrier 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 (where required)
• Set (10) of custom, high strength 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

 E9X 335i MT up to 3/2007

30.309.170WK*

not required

 E9X 335i AT up to 3/2007

30.309.170WK*

not required

 E9X 335i MT from 3/2007

30.309.155WK

30.309.371WK

 E9X 335i AT 3/2007- 9/2007

30.309.155WK

30.309.371WK

 E9X 335D r=2.81

30.309.173WK

30.309.174WK

 E9X 335iS DCT 2009>

30.309.173WK

30.309.186WK

 E8X 135i MT 3/2007>

30.309.155WK

30.309.371WK

 E8X 135i DCT

30.309.173WK

30.309.187WK

 F01/F02 ALPINA B7

30.309.155WK

30.309.378WK

 E63 650i 2009-11

30.309.155WK

30.309.379WK

 F01/F02 750i 2009-11

30.309.155WK

30.309.381WK

 F01 750i r=3.46

30.309.155WK

30.309.382WK

 F12 550i MT r=3.08

30.309.155WK

30.309.383WK

 F30 335i MT r=3.23

30.309.155WK

30.309.384WK

 E9X 335i DCT r=2.56

30.309.173WK

30.309.186WK

 E8X 135i DCT r=2.56

30.309.173WK

30.309.187WK

 F22 M235i r=3.08

30.309.155WK

30.309.392WK

 E9X 335i AT from 9/2007 >

30.309.175WK*

not required

 E8X 135i AT

30.309.175WK*

not required

 F3X 328i/428i

30.309.175WK

30.309.185WK

 F3X 335i/435i AT

30.309.175WK

30.309.188WK

 


* indicates bolted OEM ring gear. No machining or Install Kit required.

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