Downstream Oxygen Sensor 15630 O2 Sensor 2 for 2001-2002 Land Rover Discovery Series II SE - 4.0L, for 2002-2005 Land Rover Freelander S - 2.5L Length (Sensor to Lead):600 mm ( 23.62 inch). Wires: 4 Post-cat oxygen sensor 2 for 2001-2002 Land Rover Discovery Series II SD - 4.0L Downstream oxygen sensor 2 for 2002-2005 Land Rover Freelander HSE - 2.5L O2 sensor downstream for 1999 Land Rover Range Rover S - 4.0L Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase. Warranty: 1 year unlimited miles.