OER Parts offers a wide selection of Heater Parts for your 1994 Buick Century. OER Parts offers 1994 Buick Century Expansion Valve, 1994 Buick Century Hose Clamps, 1994 Buick Century Hose Fittings, 1994 Buick Century Hoses and Lines, 1994 Buick Century Vent and Duct Parts.