If one was curious about cars, one could easily mistake the part behind the Saturn Ion grill as the radiator. No, it is not the radiator, but yes, it is part of the car’s elaborate air conditioning system, which is responsible for maintaining the ice box chill during hot weather. Called the condenser, it is involved in the second step of the AC’s cooling process. When the driver or passenger turns on the air conditioning using the power switch called the compressor, which initiates the pumping of the refrigerant through the other parts of the AC system. The refrigerant (also known as air vapors) moves through the Saturn Ion AC condenser and high pressure cools the vapors into liquid form when the heat is removed and continues through the rest of the AC system. When air fails to cool properly or fails to circulate sufficiently in the car, there is a problem with the Saturn 2003-2005 AC condenser. Replace the 2003-2005 Ion AC condenser with the 2003-2005 Silla AC condenser should resolve the problem. Just make sure to get the AC inspected at each regularly scheduled maintenance check to prevent clogged condensers and ensure that the cooling system of the 2003-2005 Saturn Ion operates efficiently. Auto enthusiasts are entitled to fantastic sales support when purchasing quality parts for a car or truck. Because you deserve that, we run a round-the-clock service bureau to answer your questions. If you find a better price, call us - we will meet or beat any advertised price for auto parts.