Shop 2005 Buick Century Cap. Reservoir. Assembly - Radiator Surge TK. Engine Coolant. 3.0 LITER, 3.6 LITER, Cooling, PKG - OEM Buick Part # 20898801

A cover that prevents foreign debris from entering the container. Location-Reservoir. Radiator Cap. Included with: Reservoir tank.

Radiator CapEngine Coolant Reservoir Cap

Fits CTS, STS

3.0 LITER, 3.6 LITER. 3.0, 3.6 LITER. 3.6 LITER. 4.6 LITER, W/O TRAILER PKG. 4.6 LITER, W/TRAILER PKG. 6.2 LITER. Coupe, 6.2 LITER. CTS. CTS-V. SEDAN, 3.0 LITER, 3.6 LITER. STS. WAGON, 3.0, 3.6 LITER. Wagon, 6.2 LITER.
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.