{"product_id":"ntk-25743-oxygen-sensor-downstream","title":"NTK 25743 Oxygen Sensor - Downstream","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eNTK Oxygen Sensor 25743 is a direct-fit, heated oxygen sensor built for specific downstream applications. It is engineered for precise fit, stable signal performance, and OE-style replacement on BMW M2, BMW M4, and BMW M3 applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit design for specific applications\u003c\/li\u003e\n\u003cli\u003eHeated oxygen sensor for faster operating response\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with threaded mounting\u003c\/li\u003e\n\u003cli\u003e26.75-inch wiring harness length\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter\u003c\/li\u003e\n\u003cli\u003eNTK 25743 part number for easy identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 25743 is part of the Direct Fit Oxygen Sensor line, a product family focused on application-specific replacement and OE-style coverage. Built by NTK, a major original equipment oxygen sensor supplier, this sensor uses ceramic-based manufacturing expertise and extensive production testing to support fit, form, and function. It is a threaded, heated sensor with a specific fit design, making it a practical replacement for downstream oxygen sensor service on BMW M2, BMW M4, and BMW M3 models listed in the fitment data. This part cross-references BMW 11787848486 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a failed downstream oxygen sensor\u003c\/li\u003e\n\u003cli\u003eRestoring proper exhaust gas feedback to the engine management system\u003c\/li\u003e\n\u003cli\u003eAddressing check engine light concerns related to oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues caused by inaccurate air-fuel monitoring\u003c\/li\u003e\n\u003cli\u003eServicing OE-equivalent sensor applications on BMW M2, BMW M4, and BMW M3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the downstream location, connector style, thread diameter, and harness length before installation. Use the fitment notes to confirm the correct BMW M2, BMW M4, or BMW M3 application, and compare the original sensor to the replacement part number 25743 before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK tests oxygen sensors during manufacturing to support quality and reliability that meet or exceed OE specifications. The brand’s OE-supplier background and application-specific design support consistent replacement performance.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731443671221,"sku":"BFPZ-25743","price":176.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25743_Fro.jpg?v=1794296911","url":"https:\/\/www.partcatalog.com\/products\/ntk-25743-oxygen-sensor-downstream","provider":"PartCatalog","version":"1.0","type":"link"}