{"product_id":"walker-350-34539-oxygen-sensor","title":"Walker 350-34539 Oxygen Sensor","description":"\u003ch2\u003eWalker 350-34539 Oxygen Sensor Overview\u003c\/h2\u003e\u003cp\u003eWalker Products 350-34539 is a heated oxygen sensor built as a specific-fit OE replacement for select Ford, Lincoln, Mazda, and Mercury applications. It is engineered to provide the ECU with the exhaust feedback needed for proper fuel control and emissions monitoring.\u003c\/p\u003e\u003cp\u003eFor vehicles such as the Ford F-150, Ford Ranger, and Ford Explorer, this oxygen sensor supports accurate upstream or downstream signal reporting based on the listed position. The Walker Products Aftermarket line focuses on application-specific engine management sensors for direct replacement use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor design for faster operating temperature\u003c\/li\u003e\n\u003cli\u003eSpecific-fit application for listed vehicle positions\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with male connector\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18.0 mm thread diameter\u003c\/li\u003e\n\u003cli\u003eOverall length: 18.82 in.; wiring harness length: 15.28 in.\u003c\/li\u003e\n\u003cli\u003eRadiused polygon connector shape for the listed OE-style interface\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eWalker Products 350-34539 is designed for emissions control systems that rely on precise oxygen sensor feedback. It is listed for upstream and downstream positions across multiple Ford truck and SUV platforms, including Ford F-150, Ford Ranger, Ford Explorer, Ford Expedition, Lincoln Mark LT, Lincoln Navigator, Mazda B3000, Mazda B4000, and Mercury Mountaineer. This part number is also listed for the 2016 Ford Fiesta downstream application.\u003c\/p\u003e\u003cp\u003eAs an OE replacement sensor, it is intended to match the specified fitment position and provide the diagnostic input required by the ECU. Walker Products has supplied engine management and oxygen\/air-fuel sensors since 1946, and the Walker Products Aftermarket line is built around application-specific replacement coverage.\u003c\/p\u003e\u003cp\u003eThis part cross-references no additional part numbers in the provided data.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light related to oxygen sensor faults\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy caused by incorrect exhaust feedback\u003c\/li\u003e\n\u003cli\u003eRough engine operation from inaccurate air-fuel readings\u003c\/li\u003e\n\u003cli\u003eHigher exhaust emissions from a failing sensor\u003c\/li\u003e\n\u003cli\u003eStored ECU fault codes tied to the affected sensor circuit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify the exact year, make, model, and sensor position before ordering.\u003c\/li\u003e\n\u003cli\u003eInspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear.\u003c\/li\u003e\n\u003cli\u003eConfirm the threaded mounting location and connector style match the original unit.\u003c\/li\u003e\n\u003cli\u003eUse the listed upstream or downstream position exactly as shown for the vehicle application.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Products is an Automotive ISO9001\/TS 16949 certified company. The brand develops engine management sensors as OE-style replacements for specific vehicle applications, with cataloging and packaging support built for aftermarket service.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":51870214291637,"sku":"DKHD-350-34539","price":41.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_35034539_Fro.jpg?v=1774892112","url":"https:\/\/www.partcatalog.com\/products\/walker-350-34539-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}