OER Parts offers a wide selection of Heater Parts for your 1987 Buick Century. OER Parts offers 1987 Buick Century Expansion Valve, 1987 Buick Century Hose Clamps, 1987 Buick Century Hose Fittings, 1987 Buick Century Hoses and Lines, 1987 Buick Century Vent and Duct Parts.