OER Parts offers a wide selection of Heater Parts for your 1939 Buick Century Series 60. OER Parts offers 1939 Buick Century Series 60 Expansion Valve, 1939 Buick Century Series 60 Hose Clamps, 1939 Buick Century Series 60 Hose Fittings, 1939 Buick Century Series 60 Hoses and Lines, 1939 Buick Century Series 60 Vent and Duct Parts.