1978 Chevrolet Pick-up Truck Engine Gasket Set - Rear Main Seal 6.6L Engine - Naturally Aspirated - Silverado Chevrolet - 4 Barrel Carb. - OHV - Gasket Included: No guaranteed to replace your current 1978 Chevrolet Pick-up Truck Engine Gasket Set - Rear Main Seal 6.6L Engine - Naturally Aspirated - Silverado Chevrolet - 4 Barrel Carb. - OHV - Gasket Included: No. 1978 Chevrolet Pick-up Truck Engine Gasket Set - Rear Main Seal comes new OEM 1978 Chevrolet Pick-up Truck Engine Gasket Set - Rear Main Seal aftermarket new 1978 Chevrolet Pick-up Truck Engine Gasket Set - Rear Main Seal of remanufactured 1978 Chevrolet Pick-up Truck Engine Gasket Set - Rear Main Seal 6.6L Engine - Naturally Aspirated - Silverado Chevrolet - 4 Barrel Carb. - OHV - Gasket Included: No.