{"product_id":"acdelco-engine-coolant-temperature-sensor-g1852-12334869-gold-line-0-840in-thread-100-220-f","title":"ACDelco Engine Coolant Temperature Sensor G1852 (12334869) Gold-line 0.840in Thread 100–220°F","description":"\u003cb\u003eACDelco Gold G1852 (12334869) is a professional-grade engine coolant temperature sensor built as a direct aftermarket replacement for accurate engine temperature monitoring.\u003c\/b\u003e\n\nThis ACDelco Gold sensor is designed to restore proper temperature readings for your vehicle’s engine management, cooling fan control, and dash gauge operation. Built to precise tolerances, it aims to deliver reliable fit and function where the original sensor is required. The G1852 model is part of ACDelco's premium line of replacement parts, manufactured to meet strict quality and durability expectations for multiple vehicle systems.\n\n\u003cp\u003e\u003cstrong\u003eWhy does the coolant temperature sensor matter for your car?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eHow does the G1852 affect engine performance and diagnostics?\u003c\/h3\u003e\n\u003cp\u003eThe coolant temperature sensor provides the engine control unit (ECU) with the temperature data needed to adjust fuel delivery, ignition timing, and to monitor emission controls. A correct reading prevents rough cold starts and supports efficient engine operation across temperature ranges.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAccurate temperature input for ECU adjustments and diagnostics\u003c\/li\u003e\n  \u003cli\u003eHelps maintain proper fuel-air mixture during warm-up\u003c\/li\u003e\n  \u003cli\u003eSupports emission control and onboard diagnostic systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key specifications and what do they mean?\u003c\/h3\u003e\n\u003cp\u003eThe G1852 is specified for a thread diameter of 0.840 inch and is calibrated across a typical operating range from approximately 100°F to 220°F. Those values indicate the sensor’s mechanical fit and its effective temperature span for normal engine operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread diameter: 0.840 inch — matches compatible sensor ports\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: ~100°F to 220°F — suitable for most gasoline engines\u003c\/li\u003e\n  \u003cli\u003eGold-line quality — upgraded materials and testing versus economy replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to install and test the replacement sensor?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic automotive tasks: drain minimal coolant if required, remove the old sensor, install the ACDelco unit with a proper sealant or new gasket, and reconnect wiring. After installation, verify operation by checking ECU live data or confirming correct gauge movement and fan operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple hand tools required—wrench\/socket for 0.840-inch thread\u003c\/li\u003e\n  \u003cli\u003eMinimal coolant loss with cautious removal and reuse of drained fluid when possible\u003c\/li\u003e\n  \u003cli\u003eVerify using scan tool live data or observing correct fan and gauge behavior\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this sensor fit my vehicle and replace the OEM part?\u003c\/h3\u003e\n\u003cp\u003eThe ACDelco Gold G1852 is manufactured to match the fit, form, and function of original equipment sensors, but always confirm vehicle-specific compatibility using the OEM part number or fitment guide. Correct thread size and electrical connector type are essential for a proper replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned as an aftermarket direct-replacement part\u003c\/li\u003e\n  \u003cli\u003eConfirm fitment against OEM number 12334869 or vehicle application guides\u003c\/li\u003e\n  \u003cli\u003eCheck connector style and mounting port dimensions before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The ACDelco Gold G1852 suits DIY mechanics, independent shops, and fleet technicians seeking a dependable aftermarket coolant temperature sensor that mirrors OEM quality. It’s ideal for vehicles requiring the 0.840-inch threaded sensor with the specified temperature calibration, and for anyone prioritizing durable components that support engine management, HVAC fan control, and accurate dash readings.\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: Can I install the ACDelco G1852 myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—installation is typically straightforward with basic tools; confirm thread and connector match, drain minimal coolant, swap sensors, and verify readings after installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this sensor match the OEM part number 12334869?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The G1852 is produced to replace that OEM reference; double-check vehicle fitment guides or the OEM number before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":48086152937630,"sku":"B000C9SM22","price":42.79,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/acdelco-g1852-front-packaging.jpg?v=1785887079","url":"https:\/\/northtrailauto.ca\/products\/acdelco-engine-coolant-temperature-sensor-g1852-12334869-gold-line-0-840in-thread-100-220-f","provider":"North Trail Auto","version":"1.0","type":"link"}