ApplicationCompatible for BMW3-Series 1999-2005 compatible for BMW5-Series 1999-2003 compatible for BMWX3 2004-2006 compatible for BMWX5 2001-2006 compatible for BMWZ3 1998-2002 compatible for BMWZ4 2003-2005 compatible for Land Rover compatible compatible for Range Rover 2003-2005SpecificationSensor Type: Heated Pakage Include: 4 pcs (two front sensors and two rear sensors) Location: Downstream and Upstream O2 Sensor Configuration: Direct Fit Connector Gender: Female Wires Quantity: 4 Wire Leads Installation Type: Screw Upstream Wire Harness Length: 17.7\'\' (450 mm) Replace OEM Number:11781433940, 0258005109, 250-24392, 11781742050, 0258003477, 250-24611 2344672, 234-4672,258003477, 0 258 003 477,ES10899,234-4683,250-24392,ES10857NoteIf there is a problem with the ternary catalyst, replacing the oxygen sensor will not solve the problem of the fault light. If the ternary catalyst has no effect, the data detected by the oxygen sensor will be abnormal