Like the radiator in your house, the Mitsubishi radiator in your car is a heat exchanger. What that means is that your Mitsubishi radiator allows the coolant flowing within to exchange its heat with the ambient air. The air carries the heat away, while the coolant leaves your Mitsubishi radiator and heads back into the engine to gather more heat. It's a simple thermal cycle and your Mitsubishi radiator is at the center. It doesn't take a scientist to see that a plugged or leaking Mitsubishi radiator isn't going to effectively exchange its heat with the surrounding air. In this case, you get overheating, either by the heat not escaping the Mitsubishi radiator, or by the coolant leaking out of the Mitsubishi radiator and never making it back to the engine. You'll need a new Mitsubishi radiator, despite the claims of those stop-leak and cooling system flush products on the market. We stock a full line of Mitsubishi radiator assemblies custom-designed for your car. That means your new Mitsubishi radiator will be a direct-fit, bolt-in affair with a minimum of muss and fuss. Plus, your new Mitsubishi radiator will cost you less when you buy it from us--we guarantee it.