Clean old gasket material from cylinder head and thermostat housing.Install thermostat housing with gasket and support bracket to cylinder head. Torque bolts to 28 N·m. (250 in. lbs.).Connect coolant bypass hose and upper radiator hose to thermostat housing.Refill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).Install engine cover (Refer to 9 - ENGINE COVER - INSTALLATION).Connect negative battery cable.