{"product_id":"four-seasons-36509-engine-cooling-fan-switch","title":"Four Seasons 36509 Engine Cooling Fan Switch - Upper","description":"\u003ch2\u003eReliable Engine Cooling Fan Switch for BMW and Nissan Vehicles\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Temperature Switch 36509 is designed to maintain optimal engine temperature by controlling the cooling fan operation. Specifically compatible with BMW 328is and Nissan 200SX models, this radiator-mounted temperature switch ensures precise fan activation and deactivation based on engine temperature.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConnector color: Black with rectangular female connector\u003c\/li\u003e\n\u003cli\u003eTwo terminal pins for secure electrical connection\u003c\/li\u003e\n\u003cli\u003eFitting thread size: M16 x 1.50 male thread for radiator mount\u003c\/li\u003e\n\u003cli\u003eTemperature activation range: turns on at 197°F and off at 188°F\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications for reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Four Seasons Temperature Switch Product Line\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Temperature Switch line focuses on temperature-sensitive components that regulate engine cooling systems. This product line offers switches engineered to activate cooling fans at precise temperature thresholds, helping maintain engine efficiency and prevent overheating. The 36509 switch is part of this line, providing a radiator-mounted solution with accurate temperature control for select BMW and Nissan vehicles.\u003c\/p\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Four Seasons 36509 engine cooling fan switch features a black rectangular female connector with two terminal pins, ensuring a secure and reliable electrical connection. It mounts directly to the radiator using a male M16 x 1.50 threaded fitting. The switch activates the cooling fan at 197°F and deactivates it at 188°F, maintaining optimal engine temperature. Designed to meet or exceed OEM standards, this temperature switch is engineered for durability and consistent performance in demanding automotive environments.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents engine overheating by activating the cooling fan at the correct temperature\u003c\/li\u003e\n\u003cli\u003eEnsures cooling fan turns off to avoid unnecessary power consumption\u003c\/li\u003e\n\u003cli\u003eReplaces faulty or worn temperature switches causing erratic fan operation\u003c\/li\u003e\n\u003cli\u003eRestores proper radiator fan control in BMW 328is and Nissan 200SX models\u003c\/li\u003e\n\u003cli\u003eHelps maintain engine efficiency and prolong component life\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the radiator mounting location is clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the M16 x 1.50 threaded fitting\u003c\/li\u003e\n\u003cli\u003eVerify connector polarity and secure connection to prevent electrical issues\u003c\/li\u003e\n\u003cli\u003eConsult vehicle service manual for specific torque specifications and installation procedures\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Temperature Switch 36509 is manufactured to meet or exceed OEM quality standards, ensuring reliable operation and longevity. This part undergoes rigorous testing to confirm temperature accuracy and durability. While specific warranty details may vary, Four Seasons products typically include a limited warranty against defects in materials and workmanship.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44596988608693,"sku":"BBRN-36509","price":34.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_36509_Fro.jpg?v=1775068006","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-36509-engine-cooling-fan-switch","provider":"PartCatalog","version":"1.0","type":"link"}