Collection: BMW

BMW owners search by chassis code — E90, F30, E70, F15 — more than almost any other brand, because BMW reuses model names across generations that share nothing mechanically. The 3 Series E90 and F30 are completely different platforms with no structural or drivetrain interchangeability, despite carrying the same nameplate. Always identify your chassis code before ordering any BMW component, and provide it alongside your VIN for the most precise fitment confirmation.

BMW Chassis Codes — Key Platforms

ZF 8HP Transmission — BMW's Best-Value Used Drivetrain Component

The ZF 8-speed automatic (8HP) fitted to BMW 3 Series, 5 Series, X3, and X5 from approximately 2012 onwards is widely regarded as one of the finest automatic transmissions ever produced. New OEM pricing exceeds $3,000–$5,500 at the dealer. Used OEM units from documented low-mileage donors are one of the best-value drivetrain purchases available in the used market — factory-calibrated, proven in service, and available at a fraction of new cost. The ZF 8HP is also shared with Rolls-Royce, Land Rover, Jaguar, and Maserati applications, expanding the donor pool beyond BMW alone.

BMW xDrive Transfer Case

BMW's xDrive AWD system uses a transfer case (typically the ATC 35L or ATC 700 unit) to distribute torque between front and rear axles. This is a known service item on E70 X5 and F25 X3 applications — failure typically presents as AWD malfunction warnings, binding at low speed, or unusual drivetrain noise during turns. Used OEM transfer cases from matched donors save $800–$1,500 over new dealer pricing and carry our 90-day warranty. The transfer case requires coding using BMW ISTA diagnostic software after installation.