1966 Plymouth Belvedere 4.5L V8 GAS. 1970 Plymouth Belvedere 6.3L V8 GAS. 1966 Plymouth Belvedere 5.2L V8 GAS. Notes: Molded Coolant Hose -- Without A.C.; CUT TO FIT. Engineered to resist electrochemical degradation, the leading cause of hose failure.