This little piece basically lets water escape from your HVAC system, specifically from the evaporator core. That core is where your AC gets cold, and as it does, condensation builds up – kind of like a cold glass of iced tea sweating on a warm day. The drain lets that water drip out instead of pooling and causing problems. It’s part of the overall drainage system for your AC. It connects to the evaporator housing and directs water towards the drain tube, which then exits somewhere under the vehicle, usually near the floor. It’s a small component, but a crucial one in keeping things flowing correctly. It's often a rubber or plastic piece that fits snugly into the evaporator case. If this gets clogged or damaged, you’ll notice if water starts backing up inside your car. You might see dampness on the passenger floor, smell mildew, or even have water dripping. That’s not good. It can lead to corrosion, electrical issues, and generally just make things unpleasant. It acts like a shield against those issues, making sure moisture doesn't build up where it shouldn't. We carry a good selection of these at Fixparts Online if you’re looking to replace it, and they’re generally pretty easy to swap out yourself. Quality you can count on: Water Drain (MPN 5Q2820127E) comes with a 12-month warranty!

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