Cooling system for generator. This comes complete with all the fittings needed to plumb to your generator to re-circulate the fluid through the supplied coil. By pumping the fluid from the generator through the coil, the fluid cools before it returns to the generator. The fluid returns at the same rate that is being drawn. These work great in warmer climates where it is difficult to keep control of the generator temperature. The pump gets mounted in the engine compartment, and the coil can be zip tied behind the grill so the air passes by the coil to cool the fluid before it retuns to the generator.