O2 Oxygen Sensor Upstream Fits for Subaru Impreza Forester Outback Legacy 2003-2004, Baja 2003-2006 2.5L H4 Replace 234-9015 electronics_update_2023 you only need to connect

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O2 Oxygen Sensor Upstream Fits for Subaru Impreza Forester Outback Legacy 2003-2004, Baja 2003-2006 2.5L H4 Replace 234-9015 electronics_update_2023 you only need to connectO2 Oxygen Sensor Upstream Fits for Subaru Impreza Forester Outback Legacy 2003 2004, Baja 2003 2006 2. 5L H4 Replace 234 9015 Product Features Vehicle Model: Oxygen Sensor replacement for Subaru Impreza 2. 5L H4 2003 2004, Forester 2. 5L H4 2003 2004, Baja 2. 5L H4 2003 2006, Outback 2. 5L H4 2003 2004, Legacy 2. 5L H4 2003 2004 (Note: Before making a purchase, please check the vehicle model) Replace Part Number: Oxygen sensor upstream replace 234