What does the the other end look like. Is it tied into a heater hose or the bottom of the radiator?. Sometimes they are put in cars, especially in colder climates. You plug it in usually overnight. It's thermostatically controlled to keep the water temp at a set temperature. Then in the morning, you have instant heat on those cold winter days.

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2006 GT Tungsten Grey 5 spd, Xcal2/Pipeline CAI, Powerhouse tune. Spoiler delete. Front Speakers:Infinity 6812CF;Blaupunkt GTc652. Rear:Infinity Kappa 682.7CF. H/U:Alpine CDA-9885. Alpine MRP-F250 amp. Sequentials. President of the Splash guard registry. On Deck: Motoblue UDP's.