Sidem 21574 Oscillating arm, wheel suspension Mounting side: lower Assembly: Front Assembly: front axle left Conical codolo step: 1/6 Conical caliber [mm]: 14.5 Type oscillating arm: oscillating longitudinal arm N Equipped article: 21575 Frame material: aluminum Original codes OE/OEM BMW: 31 12 1 141 961 Before ordering Note: To avoid problems we recommend identifying your vehicle, communicate us the data via e-amil or by phone, our experts are at your disposal.