This item is a 12V electric washer pump motor produced by Tudor Car Parts.
 
The pump provides one inlet and one output water port, designed to work with most generic classic car washer systems.
 
Attached is a rear-facing mounting bracket, fixed to the pumps plastic underside via three screws.
 
This pump has separately labelled live and earth terminals, with an electrically isolated blacket, and can be fitted to both positive and negative earth configurations.