Banglii Pack of 2 O2 Oxygen Sensor Upstream 234-9097 and Downstream 234-4445 Compatible with Subaru Legacy Outback H4 2.5L 2010 2011 2012 Replace 22641-AA540 22641-AA54A 22690-AA810 15170 Pack of 2 O2 Oxygen Sensor Upstream 234-9097 and Downstream 234-4445 Compatible with Subaru Legacy Outback H4 2.5L 2010 2011 2012 Replace 22641-AA540 22641-AA54A 22690-AA810 15170 for Pack of 2 O2 Oxygen Sensor Upstream 234-9097 and Downstream 234-4445 Compatible with Subaru Legacy Outback H4 2.5L 2010 2011 2012 Replace 22641-AA540 22641-AA54A 22690-AA810 15170 Sensor for Car  (Pack of 1)

Advantages: 1) Made of stainless steel and other materials; 2) Timely replacement can improve engine performance, fuel saving ; 3) Can be combined with Other OE numbers are cross-referenced. As long as the model is correct, it can be replaced directly, which is easy to install and saves labor.|OE Part Numbers: 234-9097, 2349097, 250-54067, 18066, 24831, OS5597, 22641-AA540, 22641-AA54A; 234-4445, 2344445, 213-2951, 15170, 15172, 24642, OS5331, 22690-AA810, 22690AA810, 22690-AA81A, 32010413 (Please use Amazon's Your Garage function and verify the fitment of the autopart by the year/make/model of your vehicle and the OE number of the replaceable part.)|Function: The oxygen sensor can accurately detect your vehicle, ensure that the engine is continuously monitored and runs efficiently, and at the same time maximize performance, improve vehicle fuel economy, help the engine run smoothly.|Package Includes: 2 x Oxygen Sensor; Bank 1 Sensor 1=Upstream Right/Rear; Bank 2 Sensor 1=Upstream Left/Front; Bank 1 Sensor 2=Downstream Right/Rear; Bank 2 Sensor 2=Downstream Left/Front; sensor 1=Upstream, sensor 2=Downstream.|Notes: Please check your vehicle accessories carefully, our product description and your part picture with our picture, especially the plug, it must be exactly the same, otherwise it won't fit your car.