{"product_id":"ntk-25682-oxygen-sensor-downstream","title":"NTK 25682 Oxygen Sensor - Downstream","description":"\u003ch2\u003eDirect Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eNTK 25682 is a specific-fit heated oxygen sensor built for downstream applications with threaded mounting and a 4-wire design. It uses a 33.5-inch harness and an 18 mm thread diameter for applications that call for an OE-style direct fit.\u003c\/p\u003e\u003cp\u003eNTK 25682 is part of the Direct Fit Oxygen Sensor line, which focuses on streamlined coverage and application-specific replacement parts. For Porsche Cayenne and Audi S6 applications, this sensor supports accurate exhaust feedback with the fit, form, and function expected from an OE replacement oxygen sensor.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for downstream exhaust monitoring\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for direct replacement applications\u003c\/li\u003e\n\u003cli\u003eThreaded mounting with 18 mm thread diameter\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with 33.5-inch harness length\u003c\/li\u003e\n\u003cli\u003eOE-equivalent design for select Porsche Cayenne and Audi S6 applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis NTK oxygen sensor is engineered for direct-fit replacement in downstream positions on select Porsche Cayenne and Audi S6 models. The heated sensor design helps maintain signal response as exhaust temperatures change, while the threaded body and application-specific harness length support a clean installation on the intended exhaust location. Part number 25682 is built to match the original equipment style used in these applications, making it a practical choice when replacing a worn or failing sensor.\u003c\/p\u003e\u003cp\u003eNTK 25682 is backed by NTK's focus on original equipment oxygen sensor manufacturing and extensive production testing. The brand's Direct Fit Oxygen Sensor line is developed to simplify part selection while maintaining OE-level application coverage. This part cross-references Bosch 16986 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 exhaust feedback for engine management systems\u003c\/li\u003e\n\u003cli\u003eAddressing check engine light conditions related to sensor performance\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues caused by inaccurate oxygen readings\u003c\/li\u003e\n\u003cli\u003eReplacing a sensor with damaged wiring or worn threaded mounting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the downstream position, wire count, and thread diameter before installation. Confirm the harness length and connector routing match the original sensor layout on the vehicle. Use the fitment notes for cylinder-bank identification on Porsche Cayenne and Audi S6 applications, and compare the old sensor to part number 25682 before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of the NGK family of products and is recognized as a major original equipment oxygen sensor supplier.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731441115317,"sku":"BFPZ-25682","price":123.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25682_Fro.jpg?v=1794296656","url":"https:\/\/www.partcatalog.com\/products\/ntk-25682-oxygen-sensor-downstream","provider":"PartCatalog","version":"1.0","type":"link"}