Rear Oxygen Sensor Receptacle A

Rear Oxygen (Rear O2) Sensor Receptacle A Alternative Part Names: Rear 02 Sensor Receptacle; O2 Sensor Receptacle; Rear Oxygen Sensor Receptacle; Heater Catalyst Receptacle; Replacement Subaru Rear Oxygen (O2) Sensor Receptacle Associated Subaru Part Numbers: 22690AA491; 22690AA490; 22690AA900; 22690AA850 Wiring Diagram ID: B19 Looking for the matching Rear Oxygen Sensor Plug?  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.