Set 2pcs Upstream Air Fuel O2 02 Oxygen Sensor for 04-05 Jaguar XJR XJ8 4.2L

Compatibility: 2003-2005 Jaguar S-Type 3.0L 2003-2005 Jaguar S-Type 4.2L 2005 Jaguar Super V8 4.2L 2004-2005 Jaguar Vanden Plas 4.2L 2004-2005 Jaguar XJ8 4.2L 2004-2005 Jaguar XJR 4.2L Q&A: Q:What is Differences Between upstream and downstream O2 Sensor? .