Rear Oxygen (Rear O2) Sensor Plug A
Alternative Part Names: Rear 02 Sensor Plug; O2 Sensor Plug; Rear Oxygen Sensor Plug; Heater Catalyst Plug; Replacement Subaru Rear Oxygen (O2) Sensor Plug
Associated Subaru Part Numbers: 22690AA491; 22690AA490; 22690AA900; 22690AA850
Wiring Diagram IDs: E25; B19; B95
Looking for the matching Rear Oxygen Sensor Receptacle?
Looking to do something with your Rear O2 Sensor? Check out our Rear O2 Sensor Adapters.
Housing Only = Connector only and lock (if applicable).
Connector Kit = Connector with loose terminals and seals. Kits come with 1 extra terminal and seal.
Pigtail = Prewired connector, includes 12 inches of wire per terminal.
Pigtail with Crimps = Our pigtail option with one butt connector (crimp) per wire for easy install, includes 12 inches of wire per terminal.