{"product_id":"79psl3-4-paccar-switch-fan-override-switch","title":"ATP 79PSL3-4 Paccar Switch Fan Override Normally Close","description":"\u003c!-- SEO METADATA SUGGESTIONS (Paste into Shopify Page Title \/ Meta Description \/ URL Handle) --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- \nSuggested Page Title: ATP 79PSL3-4 Paccar \/ Kenworth High Pressure A\/C Fan Override Switch | Advance Truck Parts USA\nSuggested Meta Description: Buy the 79PSL3-4 High Pressure A\/C Fan Override Switch for Paccar \u0026 Kenworth at Advance Truck Parts USA. Female M10-1.25, 2-pin, 1-Year Warranty \u0026 Same-Day Shipping.\nUpdated URL Handle: 79psl3-4-paccar-switch-fan-override-switch\n--\u003e\n\u003cdiv class=\"atp-product-listing\" style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #333333; max-width: 900px; margin: 0 auto; padding: 15px;\"\u003e\n\u003c!-- Highlights Banner --\u003e\n\u003cdiv style=\"background-color: #f8f9fa; border-left: 4px solid #d9534f; padding: 15px 20px; margin-bottom: 25px; border-radius: 4px;\"\u003e\n\u003ch3 style=\"margin: 0 0 8px 0; color: #222222; font-size: 1.1rem; font-weight: bold; text-transform: uppercase; letter-spacing: 0.5px;\"\u003eKey Highlights\u003c\/h3\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; color: #555555;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e Designed specifically for Paccar \u0026amp; Kenworth climate control fan override systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNormally Closed (N.C.):\u003c\/strong\u003e High-pressure safety cutoff engineered for R134a refrigerant systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Month Warranty:\u003c\/strong\u003e Backed by the official Advance Truck Parts USA 1-year replacement warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Shipping:\u003c\/strong\u003e Same-day shipping available directly from Advance Truck Parts USA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Product Overview --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"font-size: 1.4rem; color: #111111; border-bottom: 2px solid #eeeeee; padding-bottom: 8px; margin-top: 0;\"\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eEnsure optimal A\/C system performance and engine cooling protection with the premium \u003cstrong\u003e79PSL3-4 High-Pressure A\/C Fan Override Switch\u003c\/strong\u003e from \u003cstrong\u003eAdvance Truck Parts USA\u003c\/strong\u003e. Built to rigid heavy-duty specifications, this switch monitors R134a refrigerant system pressure in Paccar and Kenworth commercial trucks, automatically signaling the engine fan to engage when pressure reaches critical thresholds.\u003c\/p\u003e\n\u003cp\u003eConstructed from durable, corrosion-resistant materials, Advance Truck Parts USA products deliver long-lasting, dependable switching reliability under demanding highway conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Technical Specifications Table --\u003e\n\u003cdiv style=\"margin-bottom: 30px;\"\u003e\n\u003ch2 style=\"font-size: 1.4rem; color: #111111; border-bottom: 2px solid #eeeeee; padding-bottom: 8px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px; font-size: 0.95rem;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold; width: 35%;\"\u003ePart Number \/ SKU\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003e79PSL3-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003eAdvance Truck Parts USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eFunction\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003eHigh-Pressure A\/C Fan Override Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eCircuit State\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003eNormally Closed (N.C.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eThread Size\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003eFemale M10 x 1.25 Metric Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eTerminal Count\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003e2-Pin Connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eRefrigerant Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003eR134a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 1px solid #e0e0e0;\"\u003e1-Year Replacement Warranty (Advance Truck Parts USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Compatibility \u0026 Notes --\u003e\n\u003cdiv style=\"margin-bottom: 25px;\"\u003e\n\u003ch2 style=\"font-size: 1.4rem; color: #111111; border-bottom: 2px solid #eeeeee; padding-bottom: 8px;\"\u003eVehicle Fitment \u0026amp; Notes\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; line-height: 1.8;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Compatible with Paccar and Kenworth heavy-duty trucks equipped with matching switch configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePigtail Harness Notice:\u003c\/strong\u003e Need a fresh connector? Browse the Advance Truck Parts USA catalog for matching 2-pin pigtail harnesses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atp-product-listing\" style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #333333; max-width: 900px; margin: 0 auto; padding: 15px;\"\u003e\u003c!-- Highlights Banner --\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNote\u003c\/strong\u003e\u003cspan\u003e: For pigtail use , \u003c\/span\u003e\u003ca title=\"W094139\" href=\"https:\/\/advancetruckpartsusa.com\/products\/w094139-pigtail-connector-2-pin\"\u003e\u003cspan style=\"text-decoration: underline; color: #2b00ff;\"\u003e\u003cstrong\u003e79PSL3-4 Pigtail\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e \u003c\/p\u003e","brand":"Advance Truck Parts USA","offers":[{"title":"Default Title","offer_id":33193698885770,"sku":"W029012","price":24.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0198\/1906\/9504\/files\/advance-truck-parts-79psl3-4-high-pressure-ac-switch.png?v=1786218413","url":"https:\/\/advancetruckpartsusa.com\/products\/79psl3-4-paccar-switch-fan-override-switch","provider":"Advance Truck Parts USA","version":"1.0","type":"link"}