1965 1966 Chevrolet Impala Bel Air Biscayne Caprice Convertible Hardtop Sport Coupe Sedan new fuel tank sending unit (3/8" fuel line). Replaces GM #6426973. Also fits 1966 1967 Chevelle and El Camino. Does not fit station wagon and will not work on 409's. May fit 1965 1966 GM full-size passenger cars - Pontiac Oldsmobile Buick - please check your application before purchasing.