Jagg Oil Coolers Miniature Preset Thermal Fan Switch Maximize your engine's cooling efficiency with the Jagg Thermal Fan Switch. Designed to activate your 12V fans at lower temperatures, it keeps cooling aggressive to bring your engine swiftly back to optimal performance levels. A straightforward 1/8 NPT fit makes it a seamless, efficient solution for riders who prioritize consistent engine temperature control without manual intervention. Features: Switch on any 12V-powered accessory at the preset temperature Thermal switch is naturally open (off) to switch on 12V-powered accessory at preset temperature Simple brass prongs offer easy wire connections NPT 1/8 threaded probe end plumbs into hot oil source to access heat for activation Choose from 3 temperature options Made in the USA