Gear Front Output (ATC350)

The ATC350 front output gear is a critical component that connects your transfer case to the front driveshaft. Its primary job is to ensure that power is transferred smoothly and uniformly from the transmission to the front axle, maintaining the balance required for the xDrive system to function correctly.

Yes, it is possible. If the splines on the front output gear are worn or stripped, it can cause slipping, jerking, or hesitation during power distribution. However, you should also check the transfer case motor and fluid condition to rule out other common xDrive issues.

The ATC350 transfer case is typically found in BMW F-series models, including the 5 Series (F10/F11), 7 Series (F01/F02), and some 6 Series models equipped with xDrive. Always verify your specific transfer case type before ordering.

Common symptoms include a loud clunking noise when engaging 4WD, metal shavings found in the transfer case oil, a complete loss of front-wheel drive (car becomes RWD only), or a ‘4×4’ warning light on the dashboard due to mechanical slippage.

Replacing this gear is a complex task that requires removing the transfer case from the vehicle and partially disassembling it. Because it involves precise tolerances and specialized tools, we recommend having it installed by a professional mechanic or transmission specialist.