Part Type: Engine Coolant Thermostat Housing Gasket. 1979 GMC C2500 Engine: 4.1L L6; Position: Housing To Cylinder Head;. 1980 GMC C2500 Engine: 4.1L L6; Position: Housing To Cylinder Head;. 1980 GMC C2500 Engine: 4.8L L6; Position: Housing To Cylinder Head;.
