Helical Gear Differential

The Wavetrac 30.309.166WK is a state-of-the-art helical gear differential, designed, developed, and manufactured in the USA by Autotech Driveline. It brings advanced gear technology to the market, with internal gear tooth forms optimized for superior strength and better oil film retention compared to other designs. The gear package is intentionally smaller to reduce mass while increasing durability, and significant attention has been paid to the side gear/axle interface, ensuring maximum material thickness in this critical area for high power applications. This differential features Wavetrac's patented technology, which uniquely addresses wheelspin during unloaded wheel conditions. Unlike open differentials, the Wavetrac cam device creates internal load when an unloaded wheel arises, maintaining drive on the wheel with grip. The Wavetrac 30.309.166WK is constructed from the highest quality materials, including high-strength 9310 alloy steel for its internal gears and a case-hardened steel billet body. This specific model, 30.309.166WK, is designed to use OEM drive flanges. Fitment is confirmed for the BMW M3 E46 and E92 models, as well as the M5 E60 and M6 E63. Some differential upgrades may require additional components or professional installation, depending on the specific application.