{"product_id":"acdelco-engine-coolant-temperature-shut-down-switch-gold-15-51107-19189478-oem-fit-temperature-actuated","title":"ACDelco Engine Coolant Temperature Shut Down Switch Gold 15-51107 (19189478) OEM-fit, Temperature-Actuated","description":"\u003cp\u003e\u003cstrong\u003eACDelco Gold 15-51107 (19189478) is an OEM-quality engine coolant temperature shut down switch designed as a direct-fit replacement to monitor coolant temperature and trigger system shutdown or warnings when thresholds are reached.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis ACDelco Gold switch provides a high-quality aftermarket option for vehicles that use a coolant temperature-based shut down or HVAC control input. Built to ACDelco standards for fit, form, and function, it replaces factory parts in compatible systems and integrates with engine and HVAC controls to help maintain system responsiveness. The part is also listed under part number 19189478 and is positioned as a professional-grade component for repair shops and do-it-yourself technicians.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this switch work in my vehicle’s cooling and HVAC systems?\u003c\/h3\u003e\n\u003cp\u003eThe switch senses coolant temperature through a threaded housing that mounts into the engine or coolant passage and closes or opens an electrical circuit at a factory-specified temperature point. That signal can be used to trigger a shutdown routine, alert the engine control systems, or modify HVAC behavior depending on vehicle design. Installation replaces the faulty sensor without modifying wiring or mounting points when matching OEM specifications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect electrical replacement for compatible factory sensors\u003c\/li\u003e\n\u003cli\u003eThreaded mounting for secure, leak-free fit\u003c\/li\u003e\n\u003cli\u003eTemperature-actuated electrical contact for control logic\u003c\/li\u003e\n\u003cli\u003eDesigned to integrate with engine control and HVAC circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat advantages does ACDelco Gold offer over generic switches?\u003c\/h3\u003e\n\u003cp\u003eACDelco Gold parts are engineered to match original equipment tolerances so they fit correctly and behave like the factory component. The Gold line emphasizes durability and dependable electrical performance under normal operating conditions, reducing the chance of false triggers or premature failure. Using a branded replacement also simplifies sourcing and compatibility checks for technicians and service centers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured to meet OEM fit, form, and function expectations\u003c\/li\u003e\n\u003cli\u003eConsistent electrical switching thresholds for reliable operation\u003c\/li\u003e\n\u003cli\u003eMaterials chosen for corrosion resistance and longevity\u003c\/li\u003e\n\u003cli\u003eBacked by ACDelco’s quality standards and part cross-references\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I know if this is the right part for my repair?\u003c\/h3\u003e\n\u003cp\u003eConfirm fitment by matching the vehicle make, model, engine family, and OEM part number (19189478) to your service manual or parts catalog. Visual comparison of thread size, connector style, and mounting location helps ensure compatibility. If your vehicle’s systems are showing coolant-temperature related errors, HVAC irregularities, or the factory sensor has failed inspection, this replacement is a likely candidate.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCheck OEM part number 19189478 against vehicle documentation\u003c\/li\u003e\n\u003cli\u003eCompare connector type and thread dimensions before ordering\u003c\/li\u003e\n\u003cli\u003eInspect wiring and harness for damage prior to installation\u003c\/li\u003e\n\u003cli\u003eRefer to vehicle service procedures for torque and sealing requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a straightforward swap when the replacement matches the original sensor’s threads and electrical connector. Use proper thread sealant or gasket as recommended by the vehicle manufacturer, and tighten to specified torque to prevent leaks. After installation, clear any stored diagnostic codes and verify system response through a test drive or diagnostic scan.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstall using correct thread sealant or new gasket\u003c\/li\u003e\n\u003cli\u003eTighten to manufacturer torque; avoid over-tightening\u003c\/li\u003e\n\u003cli\u003eClear diagnostic trouble codes after replacement\u003c\/li\u003e\n\u003cli\u003eVerify correct signal operation with diagnostic tools or test procedures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The ACDelco Gold 15-51107 (19189478) switch is aimed at professional technicians, independent mechanics, and informed DIYers who need a dependable replacement for coolant temperature–related controls. It’s appropriate for vehicles that require a temperature-actuated shut down or HVAC control input, and for anyone seeking an aftermarket part that closely matches OEM specifications for fit and operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is ACDelco Gold 15-51107 compatible with my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Match OEM part number 19189478, connector type, and thread size to your vehicle’s service manual to confirm compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to install this switch?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools are required beyond standard hand tools and torque wrench; use proper sealant and follow torque specs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":48086123774110,"sku":"B001DREIF2","price":48.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/acdelco-gold-front-view-switch.jpg?v=1785885530","url":"https:\/\/northtrailauto.ca\/products\/acdelco-engine-coolant-temperature-shut-down-switch-gold-15-51107-19189478-oem-fit-temperature-actuated","provider":"North Trail Auto","version":"1.0","type":"link"}