{"product_id":"universal-electric-radiator-fan-thermostat-relay-wiring-kit-3-8-npt-temperature-sensor-switch-185-f-on-175-f-off-12v-with-30a-breaker","title":"Universal Electric Radiator Fan Thermostat Relay Wiring Kit 3\/8\" NPT Temperature Sensor Switch 185°F On 175°F Off 12V with 30A Breaker","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eThermostatic Radiator Fan Relay Wiring Harness Kit for Universal 12V Applications (Classic V8 \/ Hot Rod)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Universal Electric Radiator Fan Thermostat Relay Wiring Kit automates single electric cooling fan operation based on coolant temperature to eliminate parasitic drag and prevent engine overheating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mechanical Fan Weakness\u003c\/h3\u003e\n\u003cp\u003eFactory belt-driven mechanical fans and failing clutch assemblies create continuous parasitic horsepower drag while failing to deliver adequate airflow at low RPM and prolonged idle. In traffic or staging lanes, low water pump speeds reduce airflow across the radiator core, triggering heat soak, coolant boiling, and vapor lock. Furthermore, retrofitting electric fans without a dedicated relay harness risks melting factory switches and undersized harness wiring under heavy inductive electrical loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis heavy-duty circuit delivers dedicated, uninterrupted battery voltage directly to your cooling fan via a sealed 12V automotive relay triggered by a precision \u003cstrong\u003e3\/8\" NPT\u003c\/strong\u003e brass temperature switch. Calibrated to close the circuit at 185°F and open at 175°F, it maintains optimal engine operating temperatures without overloading the vehicle charging system. An inline \u003cstrong\u003e30A auto-reset circuit breaker\u003c\/strong\u003e safeguards the circuit from thermal overload and current spikes, while high-conductivity pre-wired leads eliminate voltage drop.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 pre-wired harness with heavy-duty 12V relay and relay socket\u003c\/li\u003e\n  \u003cli\u003e1 30A auto-reset circuit breaker\u003c\/li\u003e\n  \u003cli\u003e1 temperature sensor switch, 3\/8\" NPT thread (185°F on \/ 175°F off)\u003c\/li\u003e\n  \u003cli\u003e1 brass thread adapter bushing\u003c\/li\u003e\n  \u003cli\u003e2 nuts and 4 mounting screws\u003c\/li\u003e\n  \u003cli\u003e4 ring terminals, 2 butt connectors, and 1 female spade terminal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eUniversal 12V Single Fan Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eSBC, BBC, SBF, Mopar \/ Universal 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eVaries by Application\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChevrolet Small-Block \u0026amp; Big-Block V8 (\u003cstrong\u003e265, 283, 327, 350, 396, 427, 454, 502\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003eFord Small-Block, FE \u0026amp; 385-Series V8 (\u003cstrong\u003e260, 289, 302, 351W, 351C, 351M, 390, 428, 429, 460\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003eChrysler \/ Mopar LA, B \u0026amp; RB V8 (\u003cstrong\u003e273, 318, 340, 360, 383, 400, 426, 440\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003eCustom hot rods, street rods, classic trucks, and custom 12V vehicle conversions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit my engine?\u003c\/h4\u003e\n\u003cp\u003eYes, this kit is universally compatible with any 12V system featuring an intake manifold, cylinder head, or radiator port that accommodates a \u003cstrong\u003e3\/8\" NPT\u003c\/strong\u003e sensor or larger using the included adapter bushing.\u003c\/p\u003e\n\n\u003ch4\u003eDoes this kit include an electric fan?\u003c\/h4\u003e\n\u003cp\u003eNo, the electric cooling fan is not included; this kit provides the electrical harness, relay, breaker, and thermostatic sensor switch only.\u003c\/p\u003e\n\n\u003ch3\u003eThe Muscle \u0026amp; Street Rod Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle thermal cycling and high inductive loads under continuous hood temperatures, this relay harness delivers rock-solid electrical isolation to preserve your charging system and protect your high-performance engine investment.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67896031707384,"sku":"DS-E8M8Y6TR9","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/universal-electric-radiator-fan-thermostat-relay-wiring-kit-3-8-npt-temperature-sensor-switch-185-f-on-175-f-off-12v-with-30a-breaker-1.jpg?v=1793291212","url":"https:\/\/performancechiptuning.com\/es\/products\/universal-electric-radiator-fan-thermostat-relay-wiring-kit-3-8-npt-temperature-sensor-switch-185-f-on-175-f-off-12v-with-30a-breaker","provider":"Performance Chip Tuning","version":"1.0","type":"link"}