{"product_id":"ntk-25725-oxygen-sensor-downstream-downstream-left-or-downstream-right","title":"NTK 25725 Oxygen Sensor - Downstream, Downstream Left or Downstream Right","description":"\u003ch2\u003eDirect Fit Oxygen Sensor for Import Applications\u003c\/h2\u003e\u003cp\u003eNTK oxygen sensor 25725 is a direct fit, threaded heated sensor built for specific applications with OE-equivalent design. It uses a 4-wire layout and a 26.5-inch harness for a precise replacement on supported Audi and Volkswagen models, including downstream locations.\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 on listed applications\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18 mm thread diameter\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with 26.5-inch harness length\u003c\/li\u003e\n\u003cli\u003eOE-equivalent design for supported Audi and Volkswagen fitments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 25725 is part of the Direct Fit Oxygen Sensor line, engineered for exact application coverage rather than universal use. This sensor is listed for downstream positions on select Audi A8 Quattro, S6, S7, S8, RS7, RS4, A6 Quattro, and A3 Quattro models, plus Volkswagen Eos, R32, and Passat applications. It is also listed for a 2015 Bentley Continental downstream application. NTK uses OE application technology and manufacturing controls to deliver fit, form, and function aligned with original equipment requirements. This part cross-references Bosch (e.g., 16136, 16227) 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\u003eAddressing check engine light concerns tied to oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003eRestoring proper exhaust gas feedback to the engine control system\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues caused by inaccurate sensor readings\u003c\/li\u003e\n\u003cli\u003eReplacing a sensor with the wrong connector or harness configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle year, make, model, and downstream position before installation. Confirm the sensor uses the correct B2S2 or B3S2 application note where listed, and match the threaded mounting style, wire count, and harness length to the original part. Use the fitment table to confirm exact coverage for Audi, Volkswagen, and Bentley applications.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of the NGK family and is recognized as a major original equipment oxygen sensor supplier.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731442819253,"sku":"BFPZ-25725","price":105.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25725_Fro.jpg?v=1794296833","url":"https:\/\/www.partcatalog.com\/products\/ntk-25725-oxygen-sensor-downstream-downstream-left-or-downstream-right","provider":"PartCatalog","version":"1.0","type":"link"}