{"product_id":"ntk-25642-oxygen-sensor","title":"NTK 25642 Oxygen Sensor","description":"\u003ch2\u003eDirect Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eNTK 25642 is a direct-fit heated oxygen sensor built for specific Audi applications. It uses a threaded mounting design and a 4-wire harness to match the original sensor layout for accurate replacement service.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster operating response\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for direct replacement service\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type for secure installation\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with 48.5-inch harness length\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 25642 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific replacement parts rather than universal coverage. NTK is known for oxygen sensor manufacturing and uses ceramic technology control from raw material through finished product. This sensor is manufactured and tested to meet or exceed OE specifications, with fit, form, and function aligned to original equipment requirements. It is a direct replacement for select Audi A6 and Audi 100 applications, including Audi A6 downstream left and right positions and Audi 100 and Audi 100 Quattro upstream left and right positions. This part cross-references Bosch 13396 and OSC 13414 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a failed heated oxygen sensor\u003c\/li\u003e\n\u003cli\u003eRestoring exhaust gas feedback to the engine control system\u003c\/li\u003e\n\u003cli\u003eAddressing sensor-related fault codes\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues tied to oxygen sensor signal loss\u003c\/li\u003e\n\u003cli\u003eServicing OE-style emissions control systems on Audi vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the exact vehicle, model year, and sensor position before ordering. Match the threaded mounting style, wire count, and harness length to the original part. Use the fitment notes for serial and chassis breakpoints on 1994 and 1998 applications. Professional installation is recommended for proper sensor routing and secure thread engagement.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that these oxygen sensors are extensively tested during manufacturing to support quality and reliability that meet or exceed OE specifications. The brand is part of the NGK family of products and supplies original equipment oxygen sensors globally.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731440263349,"sku":"BFPZ-25642","price":88.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25642_Fro.jpg?v=1794296558","url":"https:\/\/www.partcatalog.com\/products\/ntk-25642-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}