{"product_id":"ransoto-o2-oxygen-sensor-set-of-4-direct-fit-upstream-downstream-replacements-restores-emissions-and-fuel-trim","title":"RANSOTO O2 Oxygen Sensor Set of 4 — Direct-Fit Upstream \u0026 Downstream Replacements, Restores Emissions and Fuel Trim","description":"\u003cp\u003e\u003cstrong\u003eThe RANSOTO O2 Oxygen Sensor set of 4 is a direct-fit upstream and downstream replacement designed to restore accurate oxygen readings and emissions performance on compatible Ford, Lincoln, Mazda, Mercury and Jaguar vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you’re repairing a check-engine light related to an O2 sensor or replacing worn sensors during routine maintenance, this four-piece kit replaces several factory part numbers and fits a wide range of models. Each sensor is built for direct replacement of the listed OEM numbers—check your vehicle’s year and engine location before ordering to confirm fitment.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and part numbers does this sensor kit replace?\u003c\/h3\u003e\n\u003cp\u003eThis RANSOTO set replaces multiple factory part numbers commonly found on older Ford, Lincoln, Mazda, Mercury and some Jaguar gasoline engines. The listing covers upstream (pre-catalytic converter) and downstream (post-catalytic converter) positions and matches several OEM references so it’s easy to cross-check with your existing sensor.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces part numbers: 15717, 15716, 15718, 15719, 15664, ZZC318861, XR3Z9G444C\u003c\/li\u003e\n  \u003cli\u003eCommon Ford applications: F-150, F-250, F-350, Ranger, Explorer, Mustang and more\u003c\/li\u003e\n  \u003cli\u003eLincoln and Mercury models: Town Car, Navigator, Aviator, Mariner, Milan and others\u003c\/li\u003e\n  \u003cli\u003eOther compatible makes: Mazda 6, Tribute, B-series trucks and Jaguar S-Type\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these sensors improve vehicle operation after installation?\u003c\/h3\u003e\n\u003cp\u003eReplacing failing oxygen sensors helps the engine control unit get correct exhaust oxygen readings, which supports better fuel trim decisions and smoother engine performance. While results depend on vehicle condition, fresh sensors commonly reduce false engine codes and stabilize idle and fuel delivery.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores correct oxygen measurement for ECU fuel adjustments\u003c\/li\u003e\n  \u003cli\u003eReduces likelihood of check-engine lights tied to O2 readings\u003c\/li\u003e\n  \u003cli\u003eHelps maintain expected emissions control behavior\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these sensors straightforward to install and what should I check first?\u003c\/h3\u003e\n\u003cp\u003eThese oxygen sensors are designed as direct-fit replacements for the part numbers listed, so installation typically follows the factory sensor’s mounting and connector arrangement. Before replacing, verify the exact sensor location (upstream or downstream), confirm the vehicle year and engine code, and inspect wiring harness condition for corrosion or damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm OEM reference and sensor position on your vehicle\u003c\/li\u003e\n  \u003cli\u003eInspect wiring and connector for heat or corrosion damage\u003c\/li\u003e\n  \u003cli\u003eUse anti-seize on threads if recommended by the vehicle service manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and support come with the RANSOTO O2 sensors?\u003c\/h3\u003e\n\u003cp\u003eRANSOTO backs this sensor set with a one-year warranty and a satisfaction guarantee. If the sensors fail to meet expectations or are incompatible, contact the seller for troubleshooting, replacement, or a return per the warranty terms.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne-year limited warranty included\u003c\/li\u003e\n  \u003cli\u003eCustomer support for fitment or performance questions\u003c\/li\u003e\n  \u003cli\u003eReturn or replacement options if compatibility issues arise\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This RANSOTO four-pack is geared toward DIY mechanics, independent repair shops, and vehicle owners maintaining older Ford, Lincoln, Mazda, Mercury and select Jaguar models who need an economical, direct-replacement solution for failing upstream and downstream oxygen sensors. Verify your vehicle’s model year, engine, and existing sensor part number before purchasing to ensure proper fitment and fast, hassle-free installation.\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: Will these sensors fit my Ford F-150?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit many F-150 model years—confirm your vehicle year and compare the OEM part number with the listed replacements before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these come with a warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, RANSOTO includes a one-year warranty and a 100% satisfaction guarantee for this sensor set.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RANSOTO","offers":[{"title":"Default Title","offer_id":48083193430174,"sku":"B08PQTBCPY","price":63.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ransoto-o2-sensor-front-packaging.jpg?v=1785828280","url":"https:\/\/northtrailauto.ca\/products\/ransoto-o2-oxygen-sensor-set-of-4-direct-fit-upstream-downstream-replacements-restores-emissions-and-fuel-trim","provider":"North Trail Auto","version":"1.0","type":"link"}