BMW M Series Oxygen Sensor 11787848483 High-Performance Original Standard

BMW M series with M2, M3, M4 using S55/S58 engines: idle roughness, high fuel consumption, or MIL; oxygen sensor aging suspected. Sensor provides real-time oxygen content to ECU; ensures optimal combustion and reduced emissions. OEM 11787848483. Use dedicated socket to remove old sensor; prevent thread damage; ensure new sensor is leak-tested; perform installation with engine cold to avoid burns.