Oxygen Sensor (Pre-Catalytic Converter) - BMW B58 / F2X / F3X / G01 / G1X / G3X | 11788644371

The GENUINE part, as sold new by the dealer.
Part # 11-78-8-644-371 / 11 78 8 644 371 / 11788644371
⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov