【Warranty】2 Years. (Improve fuel efficiency & Stable performance & Durable) 【Placement on Vehicle】▲Upstream, Front, Pre-cost▲Sensor Type : Heated. ▲Wire Count : 4-Wire ▲Length : 16.929143 in (Sealing Surface To End Of Connector) 【Direct Fit Application】17018 oxygen sensor upstream replacement for 2000-2002 Subaru Forester H4-2.5L Upstream Position, for 2000-2002 Subaru Impreza H4-2.5L Upstream Position, for 2000-2002 Subaru Legacy H4-2.5L Upstream Position, for 2000-2002 Subaru Outback H4-2.5L Upstream Position 【Interchange Part Number】17018, 15230, 234-5003, 2345003, 234 5003, 12567073, 22641AA011, 22641-AA011, 22641AA012, 22641-AA012, 22641AA01A, 22641-AA01A, 22641AA01B, 22641-AA01B, 22791AA00A, 22791-AA00A, 24320, 213-3896, , 2133896, 213-2854, 2132854, 2131560, 213-1560, ES10923, SG1089, OS1843, ES10938-11B1, ES10923-11B1, 75-2774, 752774 【Service Guaranteed】Must pass a rigorous professional practice loading test before sale and shipment. 100% satisfaction after sale services and technical assistance. Please rest assured to purchase.If you have any questions, contact with us, we will reply you in 24 hours and offer the solve way for you.Hope you have a good shopping! 【Direct Fit Application】17018 oxygen sensor upstream replacement for 2000-2002 Subaru Forester H4-2.5L Upstream Position, for 2000-2002 Subaru Impreza H4-2.5L Upstream Position, for 2000-2002 Subaru Legacy H4-2.5L Upstream Position, for 2000-2002 Subaru Outback H4-2.5L Upstream Position