
This extra volume is kept in the tank, and the Pontiac Grand Prix coolant expansion tank cap has a specific pressure rating which keeps it under control.

As your Pontiac Grand Prix engine operating temperature rises while driving, the pressure of the coolant rises and forces it to expand. Often underestimated and hardly ever considered a vital part of your cooling system, your engine's coolant expansion tank cap prevents any unnecessary loss of liquid coolant.

Why Coolant Expansion Tank Cap replacement is so important. It's not every day that you realize that you have to buy a replacement Coolant Expansion Tank Cap for your automobile. The vehicle in your driveway is head and shoulders above the rest compared to all the other vehicles on the road today. When your Pontiac Grand Prix left the factory, it was destined for a driver who wants an American name in their automobile. Auto enthusiasts know that good looks is built into each Pontiac, and know that only top quality repair Grand Prix parts will suffice when your car or truck needs fixing.
