{"product_id":"gm-genuine-parts-nox-sensor-12718742-oe-fit-nitrogen-oxide-sensor-for-gm-engines-plug-and-play","title":"GM GENUINE PARTS NOx Sensor 12718742 — OE-fit Nitrogen Oxide Sensor for GM Engines, Plug-and-Play","description":"\u003cp\u003e\u003cstrong\u003eGM Genuine Parts 12718742 is an OE-quality nitrogen oxide (NOx) sensor engineered to provide accurate exhaust NOx readings for compatible Chevrolet, Buick, GMC, and Cadillac engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis NOx sensor supplies the engine control module (ECM) with real-time nitrogen oxide measurements so the vehicle’s emission control systems can adjust fuel and aftertreatment strategies. Manufactured and validated by General Motors engineers, the 12718742 model matches the original equipment fit, form, and function for the vehicles it serves. Choosing a GM Genuine Parts sensor preserves factory specifications and supports reliable communication with the vehicle’s onboard systems.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 12718742 NOx sensor integrate with my vehicle’s emission system?\u003c\/h3\u003e\n\u003cp\u003eThe sensor measures NOx concentration in the exhaust stream and sends a voltage or current signal to the ECM. The ECM interprets that data to alter injection timing, regeneration cycles, or selective catalytic reduction systems as needed to manage emissions performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProvides continuous NOx readings for closed-loop emission control\u003c\/li\u003e\n  \u003cli\u003eSends calibrated electrical output compatible with GM ECM inputs\u003c\/li\u003e\n  \u003cli\u003eDesigned to withstand exhaust temperatures and contaminants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the practical benefits of installing a GM Genuine Parts NOx sensor?\u003c\/h3\u003e\n\u003cp\u003eUsing an OE-validated sensor reduces the risk of fitment problems, diagnostic confusion, or calibration mismatches that can occur with non‑OEM alternatives. This part helps maintain the same communication protocols and response characteristics expected by the vehicle systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFactory-validated performance for accurate NOx measurement\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play fit to original wiring and mounting points\u003c\/li\u003e\n  \u003cli\u003eReduces troubleshooting time by matching OEM signal behavior\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I know if 12718742 is compatible with my GM vehicle?\u003c\/h3\u003e\n\u003cp\u003eCompatibility depends on your vehicle’s model year, engine type, and exhaust system configuration. Consult your vehicle’s parts catalog, VIN lookup, or a GM dealer to confirm that 12718742 corresponds to the OE part number for your application.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch by VIN or original equipment part number for exact fit\u003c\/li\u003e\n  \u003cli\u003eAvailable for specific Chevrolet, Buick, GMC, and Cadillac models\u003c\/li\u003e\n  \u003cli\u003eSome GM Genuine parts may have appeared previously under ACDelco GM OE\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 typically straightforward when replacing the original sensor: the unit mounts into the exhaust or aftertreatment housing and connects to the factory harness. Torque specifications and anti-seize recommendations should follow the vehicle service manual to avoid damage and ensure a secure seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRequires correct thread torque and connector seating to prevent leaks or faults\u003c\/li\u003e\n  \u003cli\u003eInspect wiring and harness for heat or abrasion damage before install\u003c\/li\u003e\n  \u003cli\u003eReplace if diagnostic codes indicate NOx sensor failure or out-of-range readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GM Genuine Parts 12718742 NOx sensor is intended for owners, technicians, and fleet managers who need a direct-fit, OEM-validated replacement for compatible Chevrolet, Buick, GMC, or Cadillac vehicles. It's especially suited for those who prefer parts designed and tested by GM engineers to maintain factory emission control behavior and simplify diagnostics and repairs.\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 replace the NOx sensor myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — if you have basic mechanical skills. Follow vehicle torque specs and connector checks; inspect wiring and use OEM-recommended installation steps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this sensor clear emissions-related warning lights?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replacing a faulty NOx sensor can resolve related codes, but confirm with diagnostics to ensure no other emission components are causing the warning.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48081569218718,"sku":"B0BS74DS32","price":308.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-12718742-front-view.jpg?v=1785808113","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-nox-sensor-12718742-oe-fit-nitrogen-oxide-sensor-for-gm-engines-plug-and-play","provider":"North Trail Auto","version":"1.0","type":"link"}