D=31Mm Output shaft left Teilegruppe Rear axle, rear-wheel drive, suspension Rear trailing arm - mount BMW Genuine Part 33 20 4 590 327 Product 33-20-4-590-327 Manufacturer number 4 590 327 supply number 4-590-327 installation location: Rear Axle Rear-Wheel Drive Suspension/ Rear Trailing Arm - Mount