1943 Chevrolet BG Engine: 3.5L L6; 1-13/16 In. 1943 Chevrolet BG Engine: 3.8L L6; 1-13/16 In. Part Type: Engine Coolant Outlet Gasket. Eng Coolant Gasket. WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.