PROCOMP DUAL 10" INCH ELECTRIC FAN & THERMOSTAT RELAY KIT 39 Dual 12V 10-inch Electronic Cooling Fan Kit Great for radiators, oil cooler, transmission coolers & more! Blades and polarity of the wiring can be reversed and it becomes a pusher fan. Universal application to fit all makes and models Derale 3/8" pipe thread water jacket thread-in brass probe thermostat w/ relay