Buy 1991 Buick Century Outlet. Thermostat. 4.3 LITER. All Models; 4.3L. S-Series; 4.3L; All. Silverado Engine, Coolant, Cooling - OEM Buick Part # 12557563 (12594929)

Engine Coolant Housing where a Thermostat is used but not included. Engine Coolant Outlet Flange. hsng. Engine Coolant Flange. Engine Coolant Housing. Water Neck.

Engine Coolant Outlet FlangeEngine Coolant Thermostat Housing

4.3 LITER. All Models; 4.3L. S-Series; 4.3L; All. Silverado, Sierra; 4.3L.
Engine Coolant Thermostat Housing - Repair or Replace
A failed thermostat housing will likely result in a cooling system leak, or will cause the engine in your 1991 Buick Century to overheat. Consider replacing your engine coolant thermostat or having our staff of expert techs handle it for you.