Oxygen sensors constantly monitor engine emissions and relays this data to the DME. Using these readings the computer determines the proper air/fuel mixture as well as how efficiently the catalyst system is functioning. Symptoms of a failed oxygen sensor range from an EML to poor fuel economy and severe loss of power. A failed upstream sensor will typically cause the engine to run poorly and a failed downstream sensor will typically present as a catalyst efficiency code.
This Genuine BMW exhaust gas temperature sensor (EGT) is mounted in the exhaust manifold on cars with the S54 6 cylinder engine including the E46 M3, MZ3 and MZ4.
This item fits the following BMWs: 2001-2006 E46 BMW M3 2001-2002 Z3 BMW M Roadster M Coupe 2006-2008 E85 BMW Z4 M Roadster M Coupe Show More Show Less
