Shop 2004 Buick Century Engine Coolant Reservoir Cap. City Express. Engine Coolant Expansion Tank - Cooling, Cause - OEM Buick Part # 19316334

Engine Coolant Reservoir Cap.
A cover that prevents foreign debris from entering the container.

Engine Coolant Reservoir Cap

Fits City Express

City Express.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.