1972-1978 Ford Courier, Mazda B-Series Pickup.       NEW-OLD-STOCK Exhaust Air Supply Check Valve.    This is an ORIGINAL FORD NOS PART.   Brand New in the box.  Ready To install.    Please email with questions.                   M010424-11             WE HAVE AN EBAY STORE WITH THOUSANDS OF ORIGINAL and NOS FORD PARTS. CHECK IT OUT.