Reproduction chrome heater hose elbow is for 351, 390, and 428CJ engines.
Replaces Ford Part # D0AZ-18599-C
Barbed End: 5/8" hose barb
Threads: 1/2" NPT (Tapered Threads)
For some helpful tips on upgrading your Cougar (or Mustang) cooling system,
check out our video