OER Parts offers a wide selection of Heater Parts for your 1993 Buick Century. OER Parts offers 1993 Buick Century Expansion Valve, 1993 Buick Century Hose Clamps, 1993 Buick Century Hose Fittings, 1993 Buick Century Hoses and Lines, 1993 Buick Century Vent and Duct Parts.