{"product_id":"walker-350-64010-oxygen-sensor-upstream-upstream-left-or-upstream-right","title":"Walker 350-64010 Oxygen Sensor - Upstream, Upstream Left or Upstream Right","description":"\u003ch2\u003eWalker 350-64010 Oxygen Sensor Overview\u003c\/h2\u003e\u003cp\u003eWalker Products 350-64010 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Toyota applications. It is engineered for upstream placement and provides the ECU with the feedback needed to monitor air-fuel control and emissions performance.\u003c\/p\u003e\u003cp\u003eFor Toyota Tacoma, Toyota Tundra, and Toyota 4Runner models in the listed California-emissions applications, this sensor is a direct-fit option for restoring proper exhaust feedback. The Walker Products Aftermarket line focuses on application-specific engine management sensors, and this part number follows that approach for the correct mounting position and connector style.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: 350-64010\u003c\/li\u003e\n\u003cli\u003eHeated oxygen sensor for upstream use\u003c\/li\u003e\n\u003cli\u003eSpecific fit for the listed Toyota applications\u003c\/li\u003e\n\u003cli\u003e4-wire design with 20-gauge wiring\u003c\/li\u003e\n\u003cli\u003e14.09 in. wiring harness length\u003c\/li\u003e\n\u003cli\u003eRadiused polygon male connector\u003c\/li\u003e\n\u003cli\u003e18.0 mm thread diameter\u003c\/li\u003e\n\u003cli\u003eFlange mount design\u003c\/li\u003e\n\u003cli\u003eOverall length: 17.64 in.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2001-2004 Toyota Tacoma, upstream.\u003c\/li\u003e\n\u003cli\u003eFits 2001-2004 Toyota Tundra, upstream.\u003c\/li\u003e\n\u003cli\u003eFits 2000 Toyota 4Runner, upstream, California-ESV vehicles.\u003c\/li\u003e\n\u003cli\u003eFits 2000 Toyota 4Runner, upstream, California emissions ESV vehicles.\u003c\/li\u003e\n\u003cli\u003eFits 2000 Toyota Tacoma, upstream, California emissions vehicles.\u003c\/li\u003e\n\u003cli\u003eFits 2000 Toyota Tundra, upstream right, California emissions.\u003c\/li\u003e\n\u003cli\u003eFits 2000 Toyota Tundra, upstream left, California CARB E.O. approved.\u003c\/li\u003e\n\u003cli\u003eFits 1999 Toyota 4Runner, upstream, California emissions vehicles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat This Sensor Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light related to oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy caused by incorrect air-fuel feedback\u003c\/li\u003e\n\u003cli\u003eRough engine operation from inaccurate exhaust readings\u003c\/li\u003e\n\u003cli\u003eHigher exhaust emissions from a failing upstream sensor\u003c\/li\u003e\n\u003cli\u003eStored ECU fault codes tied to the sensor circuit or related systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eConfirm the upstream position, connector shape, thread diameter, and harness length before installation. Inspect the sensor wiring, connector, and nearby harness for heat damage or physical wear, since damaged wiring can shorten service life and affect ECU feedback. This part cross-references Walker Products Aftermarket 350-64010 for the same application.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Products develops engine management and oxygen\/air-fuel sensors as OE replacement parts for worldwide vehicle applications. The brand operates under Automotive ISO9001\/TS 16949 quality systems and has supplied engine management components since 1946.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":51870219763893,"sku":"DKHD-350-64010","price":174.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_35064010_Fro.jpg?v=1774892207","url":"https:\/\/www.partcatalog.com\/products\/walker-350-64010-oxygen-sensor-upstream-upstream-left-or-upstream-right","provider":"PartCatalog","version":"1.0","type":"link"}