BMW 3-Series Transmission— Quality OEM & Aftermarket Parts

About the BMW 3-Series Transmission

The transmission transfers power from the engine to the wheels, allowing your vehicle to change speeds and reverse direction. It contains a complex system of gears, clutches, and hydraulics (automatic) or gears and synchros (manual). Transmission failure can make your vehicle undriveable and is one of the most expensive repairs. A quality used transmission offers significant savings over rebuilt or new units.

Replacement Guide

Transmission replacement is a major job requiring professional equipment in most cases. The process involves: lifting and supporting the vehicle, removing exhaust and drivetrain components, disconnecting transmission cooler lines and electrical connectors, supporting and removing the transmission (often 150-400 lbs), installing the replacement unit with proper torque specifications, and programming/adapting the new unit to the vehicle's computer. Used transmissions must be an exact match for your vehicle's engine, drivetrain, and model year.

Signs You Need a New Transmission

• ▸Slipping gears or loss of power
• ▸Delayed or harsh engagement
• ▸Grinding or clunking when shifting
• ▸Transmission fluid leak (red/brown fluid)
• ▸Burning smell from transmission
• ▸Won't shift into certain gears
• ▸Check engine or transmission warning light
• ▸Vehicle won't move in gear
• ▸Whining or humming noise
• ▸Shuddering during acceleration