Do you want an excuse to not read about the Plymouth heater core? Fine. Go out in your garage. If you have a hemi Road Runner with the heater delete option sitting there, you're excused from reading this. As for the rest of you, you need to know about your Plymouth heater core. Why? Because when the Plymouth heater core is working correctly, it does wonders for your morning commute during the fall, winter, and spring months. And when the Plymouth heater core isn't working correctly, it can seriously damage your vehicle without you even realizing it. See, the Plymouth heater core carries water (in the form of engine coolant) into your passenger compartment. If that water happens to escape somehow-for example, through a leak in your Plymouth heater core-rust can begin to form wherever it collects. Since the amount of coolant leaking from a bad Plymouth heater core can be small enough to escape detection, at least at first, serious rust can invade your floorpans before you notice you have a Plymouth heater core leak at all. Unless you know what to look for, that is. A leaking Plymouth heater core gives several hints as to what's occurring. If you're losing antifreeze but can't figure out where it's going, that's one clue. If your antifreeze loss is coupled with an increase in humidity in the passenger compartment or an unusual, sweet odor, it's time to take a closer look at the Plymouth heater core. When you find evidence of leakage on the outside of the Plymouth heater core, jump on the computer and order a new one right here. We have an OE-spec Plymouth heater core on the shelf waiting to ship out to fix your Duster, Voyager, or Neon and stop that coolant leak right in its tracks.