{"product_id":"3-8-npt-thread-in-analog-fan-controller-switch","title":"3\/8\" NPT Thread-In Analog Fan Controller Switch","description":"\u003cp\u003eThis thread-in fan controller switch activates electric cooling fans at a preset temperature range — turning fans on at 185°F and off at 165°F — for consistent electric fan operation in street performance, racing, off-road, and custom cooling applications. The 3\/8\" NPT thread-in design installs directly into a threaded port in the coolant stream, with a single male terminal for wiring to a compatible fan relay or controller.\u003c\/p\u003e\n\u003cp\u003eThis is a temperature-activated fan control switch, not a coolant-flow thermostat — it does not regulate coolant circulation through the engine. This is the replacement switch for TSP's #HC7110 fan controller kit, and also fits any compatible 3\/8\" NPT thread-in fan switch application as a universal-fit component.\u003c\/p\u003e\n\u003cp\u003eUse thread sealant (Teflon tape or pipe thread sealant) on installation — dry-fitting NPT threads can result in coolant leaks.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eReplacement Part Compatibility\u003c\/strong\u003e\u003cbr\u003eThis switch is the direct replacement component for TSP's #HC7110 fan controller kit. It's also a universal-fit 3\/8\" NPT thread-in switch for any compatible electric fan controller setup, independent of the HC7110 kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Requirements\u003c\/strong\u003e\u003cbr\u003eThis switch requires adequate thread engagement into the coolant stream for an accurate temperature reading — confirm your radiator, intake manifold, cylinder head, or coolant passage port depth matches the sensor's threaded length before installing. Apply thread sealant to the 3\/8\" NPT threads, since NPT fittings installed dry commonly leak.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBLE WITH\u003c\/strong\u003e\u003cbr\u003eUniversal\u003cbr\u003e• Electric cooling fan controller systems\u003cbr\u003e• 3\/8\" NPT cooling system ports\u003cbr\u003e• Thread-in analog fan switch applications\u003cbr\u003e• Custom radiator and cooling system setups\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTES\u003c\/strong\u003e\u003cbr\u003eReplacement 3\/8\" NPT thread-in thermostat found in TSP #HC7110\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMMON VEHICLE APPLICATIONS\u003c\/strong\u003e\u003cbr\u003eStreet performance vehicles\u003cbr\u003eClassic cars and hot rods\u003cbr\u003eCustom cooling system builds\u003cbr\u003eOff-road and racing vehicles\u003cbr\u003eTrucks and SUVs with electric fan conversions\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003cbr\u003eFan On Temperature: 185 Degrees F\u003cbr\u003eFan Off Temperature: 165 Degrees F\u003cbr\u003eThread Size: 3\/8 in. NPT\u003cbr\u003eSending Unit Style: Thread-in\u003cbr\u003eTerminal Type: Single Terminal\u003cbr\u003eController Type: Analog\u003cbr\u003eUniversal Or Specific Fit: Universal\u003c\/p\u003e","brand":"Top Street Performance","offers":[{"title":"Default Title","offer_id":51845733253416,"sku":"HC7112","price":13.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/8356\/5608\/files\/HC7112_01.jpg?v=1779298373","url":"https:\/\/www.topstreetperformance.com\/products\/3-8-npt-thread-in-analog-fan-controller-switch","provider":"Top Street Performance","version":"1.0","type":"link"}