Green shoes may be hip in some quarters, but if you're driving your MPV and look down only to find your shoes wet and green, that's not cool. Engine coolant from your leaky, nasty Mazda heater core is dribbling all over your loafers. At least you hope it's just your loafers: A bad Mazda heater core can also cause carpet damage, floor pan rust, and, of course, cold hands and feet! But we're getting ahead of ourselves here: First let's discuss exactly what a Mazda heater core is. Looking just like a miniature engine radiator, the Mazda heater core hides underneath your dashboard and is plumbed in to the engine cooling system. When you turn on the heat, hot engine water flows into the Mazda heater core which then transfers its heat to the interior air flowing over its surface. Unfortunately, the Mazda heater core is susceptible to the same problems that a regular radiator is susceptible to: leaks and clogs. In the case of the Mazda heater core though, the green antifreeze leaking from the system ends up inside the car rather than out on the street somewhere. Since Mazda heater core leaks often start very small, it pays to keep an eye on fluid levels under your hood, particularly the coolant. If coolant starts disappearing from the radiator, it has to be going somewhere, so the Mazda heater core is immediately suspect. If you feel dampness on the carpets inside the vehicle or notice fogging on the inside of the windows at unusual times-or even just feel a sense of humidity inside the car, it's time to get online and order a new Mazda heater core from us. We keep the best names in OE Mazda heater core products in stock and ready to ship, so you don't have to live with a cold, damp car, truck, or SUV for long. Get a new Mazda heater core, get it fast, and get it cheap from us.