Wavetrac BMW E39 E52 E9X Limited Slip Differential for 335i and 540i — Part No. 30.309.170WK
Upgrade your BMW with a genuine Wavetrac helical limited slip differential. This Wavetrac LSD fits BMW E9X 335i manual and automatic models up to 03/2007, BMW E39 540i and BMW E52 Z8 with 215K bolted ring gears. Designed, developed and manufactured in the USA by Autotech Driveline, the Wavetrac diff delivers outstanding traction and corner-exit speed for fast road, track day and performance driving.
Wavetrac is the only gear type differential that does not lose all drive when one axle is unloaded. Thanks to its patented cam device and wave profile, it maintains drive and sends power to the wheel with grip, even when the inside wheel goes light over kerbs, over crests or on very slick surfaces. The result is consistent power delivery, predictable handling and faster lap times.
Why choose a Wavetrac LSD for your BMW 335i or 540i
Conventional helical ATB diffs need load on both axles to work. When an inside wheel unloads, they can act like an open differential and the driven wheel with grip is starved of torque. Wavetrac’s patented internal cam device generates load the moment one axle nears zero load, so torque is still biased to the tyre with traction. That means real-world gains in acceleration out of corners, stability in changeable conditions and confidence on road and track.
Key features and benefits
- Patented carbon fibre bias plates for the pinions deliver consistent performance and longevity across the life of the diff.
- Patented wave profile maintains drive under zero or near-zero axle load where other gear type ATB LSDs struggle.
- Super strong 9310 alloy steel gears in case-hardened steel bodies for durability under hard use.
- ARP fasteners used throughout for superior strength and reliability.
- Torque biasing helical gear design with no clutch packs to wear out.
- Designed and manufactured in the USA by Autotech Driveline.
- Wavetrac Limited Lifetime Warranty.
- No machining required and no install kit needed for this application.
Fitment and compatibility
BMW petrol models with 215K axle bolted OEM ring gears, including:
- BMW 3 Series E9X 335i Manual (2004 to 03/2007)
- BMW 3 Series E9X 335i Automatic (2004 to 03/2007)
- BMW 5 Series E39 540i
- BMW Z Series E52 Z8
Note: No machining or install kit required for these applications.
Real-world results
We have fitted and used Wavetrac differentials on our own builds and customer cars. Feedback has been consistently positive, highlighting improved traction in wet and dry conditions, stronger corner exit, reduced inside-wheel spin and a more planted, predictable rear end on both fast road and track days.
Installation and support
Professional installation is recommended. For supply and fitting, choose Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
To ensure perfect fitment, we run a compatibility check before dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout.
Built to last
Each Wavetrac differential is engineered with premium 9310 gears, case-hardened housings and ARP hardware for strength you can trust. Backed by Wavetrac’s Limited Lifetime Warranty for long-term peace of mind.
Part number
30.309.170WK
Manufactured by
Wavetrac by Autotech Driveline
SEO-friendly product highlights
BMW 335i limited slip differential, BMW E39 540i LSD, BMW Z8 LSD, Wavetrac LSD, helical LSD, torque biasing differential, ATB differential, drop-in LSD, bolt-in LSD, 215K ring gear, track day diff upgrade, fast road differential, improved traction and handling, corner-exit grip, made in USA, lifetime warranty.