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

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

2pcs for Mercury Mystique 2.5L Sable 3.8L Upstream Downstream O2 Oxygen Sensor

02 Oxygen O2 Sensor for 1999 Subaru Legacy 2.2L 2.5L Upstream Downstream 2pcs

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

2pcs Upstream&Downstream for 1999 Subaru Legacy 2.2L o2 02 Oxygen Sensor

Upstream+Downstream for 1999 Subaru Legacy 2.5L Oxygen o2 02 Sensor 2pcs

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