Knock Sensor Receptacle - Early 90s Subaru.
 
Looking for the matching Knock Sensor 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