{"product_id":"ntk-24639-oxygen-sensor-downstream-left","title":"NTK 24639 Oxygen Sensor - Downstream Left","description":"\u003ch2\u003eDirect Fit Oxygen Sensor for OE Replacement\u003c\/h2\u003e\u003cp\u003eNTK Oxygen Sensor 24639 is a direct-fit, heated oxygen sensor built for specific applications on the 2001 Infiniti QX4 and 2001 Nissan Pathfinder. With OE-equivalent design and a threaded mounting style, it supports accurate exhaust feedback for the downstream left position.\u003c\/p\u003e\u003cp\u003eAs part of NTK’s Direct Fit Oxygen Sensor line, this sensor is built for straightforward replacement on import and domestic vehicles. NTK applies ceramic manufacturing expertise and extensive production testing to deliver fit, form, and function that align with OE specifications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit oxygen sensor for specific vehicle applications\u003c\/li\u003e\n\u003cli\u003eHeated sensor design for faster operating response\u003c\/li\u003e\n\u003cli\u003e4-wire configuration for the listed OE-style application\u003c\/li\u003e\n\u003cli\u003e48-inch wiring harness length\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter with threaded mounting type\u003c\/li\u003e\n\u003cli\u003eOE-equivalent design for 2001 Infiniti QX4 and 2001 Nissan Pathfinder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eNTK 24639 is an emission control oxygen sensor engineered for the downstream left B2S2 position on the 2001 Infiniti QX4 and 2001 Nissan Pathfinder, with fitment limited to vehicles built to 8\/1\/00. This direct fit oxygen sensor is designed to match the original sensor layout and electrical configuration, helping maintain proper exhaust monitoring in the vehicle’s emissions system. This part cross-references Bosch 15445 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light concerns related to oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003eIncorrect exhaust feedback from a worn downstream sensor\u003c\/li\u003e\n\u003cli\u003eEmissions system faults tied to sensor response or wiring issues\u003c\/li\u003e\n\u003cli\u003eRough running caused by inaccurate air-fuel monitoring signals\u003c\/li\u003e\n\u003cli\u003eReplacement needs for a damaged or aging OE-style sensor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the vehicle build date before ordering, since this part applies to 2001 model-year vehicles built to 8\/1\/00. Confirm the downstream left B2S2 location, thread size, wire count, and harness length before installation. Use the vehicle’s original routing and connector layout to ensure proper placement on the Infiniti QX4 or Nissan Pathfinder.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK manufactures oxygen sensors with OE application coverage and production testing to help ensure quality and reliability that meet or exceed original equipment specifications. The NTK Direct Fit Oxygen Sensor line is supported by the brand’s role as a major OE sensor supplier.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":52412241510581,"sku":"BFPZ-24639","price":108.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_24639_Fro.jpg?v=1777787399","url":"https:\/\/www.partcatalog.com\/products\/ntk-24639-oxygen-sensor-downstream-left","provider":"PartCatalog","version":"1.0","type":"link"}