Rear O2 Sensor Plug for 2015+ Subaru WRX. 
 
Looking for the matching Rear O2 Receptacle? 
 
Looking for the earlier Rear O2 Plug? 
 
Housing Only = Plug Only
Connector Kit = Plug, Terminals, and Seals
Pigtail = Plug with Wire to Wire Connection, Terminals, and Seals
Pigtail with Crimps = Our Pigtail Option with a Butt Connector Crimp per Wire for Easy Install