Compatibility: 1999 Subaru Forester 2.5L 1999 Subaru Impreza 2.2L 1999 Subaru Impreza 2.5L Q&A: Q:What is Differences Between upstream and downstream O2 Sensor? .
2pcs O2 Oxygen 02 Sensor Upper+Downstream for 02-05 Mitsubishi Lancer 2.0L L4
O2 Oxygen 02 Sensor For 2000 Toyota Tacoma 3.4L Upstream+Downstream X2
O2 Oxygen 02 Sensor for Toyota Tacoma 2.4L Upstream+Downstream X2
O2 Oxygen 02 Sensor for 2000-2002 Toyota Echo 1.5L Upstream+Downstream X2
O2 Oxygen 02 Sensor for 04-2006 Pontiac Vibe 1.8L Upstream+Downstream X2
O2 Oxygen 02 Sensor for Toyota RAV4 2.0L L4 98-2000 Upstream+Downstream X2
