For 03-04 Subaru Legacy 2.5L A/F Ratio Oxygen Sensor O2 Upstream Downstream 2pcs

2pcs Upstream+Downstream Air Fuel Ratio o2 Sensor for 2006-2010 Subaru Forester

2pcs Upstream&Downstream for 06-09 Subaru Legacy 2.5 Air Fuel Ratio o2 02 Sensor

For 07-08 Subaru Legacy 2.5L 2pcs A/F Ratio Oxygen O2 02 Sensor Pre Downstream

2pcs for 1999 Subaru Legacy 2.5L Upstream Downstream Oxygen Sensor O2 02

For 07-08 Subaru Outback 2.5L 2pcs A/F Ratio Oxygen O2 02 Sensor Upstream Post