3.5 LITER NON TURBO. Thermostat hsng seal. Engine Coolant Thermostat Housing O-Ring. Engine Coolant Thermostat Housing Seal. O-Ring. Thermostat Housing Gasket. Engine Coolant O - Ring. Unit o - Ring. Water manifold. Water Neck. Included with: Housing assembly, Thermostat Housing, Thermostat Unit.