{"product_id":"gm-genuine-parts-heated-oxygen-sensor-afs123-19178924-direct-fit-oe-replacement-with-integrated-heater","title":"GM GENUINE PARTS Heated Oxygen Sensor AFS123 (19178924) — Direct-Fit OE Replacement with Integrated Heater","description":"\u003cp\u003e\u003cstrong\u003eThe GM Genuine Parts AFS123 (19178924) Heated Oxygen Sensor is a direct-fit OE-quality O2 sensor that measures exhaust oxygen levels so your engine control module can fine-tune air\/fuel mixture and help maintain optimal emissions and fuel economy.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis heated oxygen sensor is engineered and validated to General Motors standards, designed to replace the factory-installed sensor on compatible GM vehicles. It provides the same fit, function, and performance expectations as the original equipment, and it integrates a heating element to bring the sensing element up to operating temperature quickly for accurate readings during cold starts.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oxygen sensor affect engine performance?\u003c\/h3\u003e\n\u003cp\u003eThe oxygen sensor reports exhaust oxygen content to the engine control module (ECM), enabling precise air\/fuel ratio adjustments. When the ECM gets accurate sensor feedback, it can maintain the stoichiometric target near 14.7:1, which helps the engine run efficiently and with fewer emissions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDelivers real-time oxygen readings to the ECM for fuel trim corrections\u003c\/li\u003e\n  \u003cli\u003eSupports consistent combustion timing and throttle response\u003c\/li\u003e\n  \u003cli\u003ePromotes stable operation during warm-up thanks to the integrated heater\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes this GM Genuine Parts sensor a reliable replacement?\u003c\/h3\u003e\n\u003cp\u003eThis sensor is manufactured to GM OE specifications for fit, form, and function, and is backed by General Motors validation. That means plug-and-play compatibility on specified GM models and the same performance characteristics as the original component.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered and tested to GM standards for durability and accuracy\u003c\/li\u003e\n  \u003cli\u003eDirect-fit design minimizes installation adjustments and diagnostics\u003c\/li\u003e\n  \u003cli\u003eHeated element accelerates sensor readiness after cold starts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I know when to replace the oxygen sensor?\u003c\/h3\u003e\n\u003cp\u003eSigns of a failing O2 sensor include a persistent check engine light, reduced fuel economy, rough idle, or failed emissions testing. Diagnostic trouble codes related to oxygen sensor response or heater circuit faults are common reasons to replace the sensor.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWatch for codes like P0130–P0167 or ECM feedback indicating slow response\u003c\/li\u003e\n  \u003cli\u003eMonitor fuel mileage and idle quality for degradation over time\u003c\/li\u003e\n  \u003cli\u003eReplace per vehicle maintenance intervals or when factory diagnostics recommend\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during installation and compatibility?\u003c\/h3\u003e\n\u003cp\u003eAFS123 (19178924) is a direct-replacement part for compatible GM vehicles and typically installs with standard O2 sensor tools. Use factory torque specs and inspect wiring\/connectors during replacement to ensure a reliable electrical connection and seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit connector and thread size for specified GM applications\u003c\/li\u003e\n  \u003cli\u003eNo reprogramming required when replacing like-for-like OE parts\u003c\/li\u003e\n  \u003cli\u003eFollow vehicle service manual for torque and anti-seize guidance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This GM Genuine Parts AFS123 (19178924) Heated Oxygen Sensor is intended for owners, independent shops, and professional technicians who need a verified OE-equivalent O2 sensor for GM vehicles. It’s appropriate for anyone replacing a failing or out-of-spec oxygen sensor and seeking the reliability and fitment confidence that comes with a GM-backed part.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFeatures: Detect oxygen content in the exhaust gases to optimize emissions and fuel economy\u003c\/li\u003e\n  \u003cli\u003eFeatures: GM-recommended replacement part for your GM vehicle’s original factory component\u003c\/li\u003e\n  \u003cli\u003eFeatures: Offering the quality, reliability, and durability of GM OE\u003c\/li\u003e\n  \u003cli\u003eFeatures: Manufactured to GM OE specification for fit, form, and function\u003c\/li\u003e\n\u003c\/ul\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 AFS123 (19178924) a direct fit for my GM vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: AFS123 (19178924) is a direct-fit replacement for specific GM models; verify compatibility with your VIN or vehicle application guide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this oxygen sensor include a heater element?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the AFS123 includes an integrated heater to speed sensor warm-up and improve cold-start accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48084035076254,"sku":"B0016IKVPO","price":72.68,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-afs123-packaging-front.jpg?v=1785844293","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-heated-oxygen-sensor-afs123-19178924-direct-fit-oe-replacement-with-integrated-heater","provider":"North Trail Auto","version":"1.0","type":"link"}