OER Parts offers a wide selection of Carburetor Gaskets for your 1966 GMC G1000 Series. OER Parts offers 1966 GMC G1000 Series Air Cleaner To Carb Gasket, 1966 GMC G1000 Series Rochester Carb Heat Shield, 1966 GMC G1000 Series Holley Carburetor Base Gaskets, 1966 GMC G1000 Series Holly Fuel Bowl Gaskets, 1966 GMC G1000 Series Holley Carburetor Metering Block Gaskets, and 1966 GMC G1000 Series Carburetor Rebuild Kit.