1964-1981 Correct 3/4" Ribbed Heater Hose
1964-1981 Correct 5/8" Ribbed Heater Hose
1965-1967 Molded Heater Hose - From Heater Core to Head
1965-1981 Heater Hose To Cylinder Head Fitting, All V8
1968-1970 Molded Heater Hose - From Heater Core to Head