Compatibility: 2000 Toyota 4Runner 2.7L Q&A: Q:What is Differences Between upstream and downstream O2 Sensor? .
2pcs Upstream for 2000 Toyota 4Runner 2.7L Air Fuel Ratio O2 Sensor
2pcs Upstream For 2000-2001 Lexus ES300 3.0L 02 Oxygen O2 Sensor Air Fuel Ratio
2pcs Upstream for Toyota 1999-2000 Sienna 3.0L Air Fuel Ratio Oxygen Sensor
2pcs Upstream For 2004-05 Subaru Legacy 2.5L 02 Oxygen O2 Sensor Air Fuel Ratio
2pcs Upstream for 09-11 Buick Enclave Chevy Traverse 3.6L Oxygen Sensor O2 02
2pcs Upstream for 04-05 Subaru Legacy 2.5L Oxygen O2 02 Sensor Air Fuel Ratio
