1965 1966 Buick Thermostat Housing Water Manifold Gasket Heat Fitting 401 425

The heater hose fitting screws into the back of the water manifold crossover. 1959, 1960, 1961, 1962, 1963, 1964, 1965, and 1966 Buick LeSabre, Invicta, Wildcat, and Electra 225 models. 1963, 1964, 1965, and 1966 Buick Riviera models.