ATC300 BMW Transfer Case General Repair Kit

Common symptoms of a failing ATC300 transfer case include a distinct jerking or shuddering sensation during acceleration, clicking noises from under the car, or the ‘4×4’ and ABS warning lights appearing on your dashboard. Often, these issues are caused by worn clutch plates or damaged bearings inside the unit.

The ATC300 transfer case was primarily used in BMW xDrive models from the mid-2000s, specifically the 3 Series (E90, E91, E92) and the 5 Series (E60, E61). If your vehicle is an AWD sedan or wagon from this era, this kit is likely the correct fit for a general rebuild.

This kit is designed to address the most common points of failure. it includes one high-quality transfer case clutch pack, a complete bearing kit to eliminate mechanical noise, and a comprehensive sealing kit to prevent fluid leaks. It’s a cost-effective alternative to buying a completely new unit.

Absolutely. Fresh transfer case fluid is critical for the longevity of the new clutch and bearings. We highly recommend using BMW-approved TF 0870 (or equivalent DTF-1) fluid and performing a control module adaptation/reset after the mechanical repair is complete.

Repairing your own unit with new components is generally safer than buying a used transfer case. A used unit often has unknown mileage and may already have worn clutch plates or internal fatigue. This kit ensures that the core wear items are brand new, providing much better long-term reliability.