For Mercury Cougar and Ford Mustangs with integral or factory installed air conditioning with any V-8 engine. Original condensation drain hose from the A/C case, through the floor board, to the ground. Correct "S" shaped moulded hose with restrictor intact. Almost the same hose as was used 1969-70, Dearborn assembly line hoses have a ribbed section 1971-73. The 1969-70 versions, typically have the alligator texture on the outside of the hose.
Ford part # C9ZZ-19858.