{"product_id":"ntk-25571-oxygen-sensor-upstream","title":"NTK 25571 Oxygen Sensor - Upstream","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor Overview\u003c\/h2\u003e\u003cp\u003eThe NTK 25571 is a direct-fit heated oxygen sensor for specific BMW applications. It is built with a threaded mounting design and a 4-wire configuration for accurate exhaust feedback in the emissions system.\u003c\/p\u003e\u003cp\u003eAs part of NTK’s Direct Fit Oxygen Sensor line, this sensor is engineered for OE-style fit, form, and function. It is a strong match for BMW 318i and BMW 318is applications that require an upstream oxygen sensor with the specified harness length.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster operating response\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for direct replacement use\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type for secure installation\u003c\/li\u003e\n\u003cli\u003e4-wire configuration for signal and heater circuit operation\u003c\/li\u003e\n\u003cli\u003e36.7500 wiring harness length for the listed application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment Details\u003c\/h2\u003e\u003cp\u003eFits 1991-1992 BMW 318i, upstream.\u003c\/p\u003e\u003cp\u003eFits 1991 BMW 318is, upstream.\u003c\/p\u003e\u003cp\u003eThis part cross-references Bosch 13069 and BMW 11781734796 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a worn or slow-responding upstream oxygen sensor\u003c\/li\u003e\n\u003cli\u003eRestoring proper exhaust gas feedback to the engine management system\u003c\/li\u003e\n\u003cli\u003eAddressing oxygen sensor fault codes related to heater or signal performance\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues tied to inaccurate air-fuel mixture control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the upstream location, connector style, thread diameter, and harness length before installation. The 18.000 thread diameter and threaded mounting type must match the vehicle’s sensor port for proper fitment. Use the listed BMW application data to confirm compatibility with the exact model year.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK is a major original equipment oxygen sensor supplier and tests these sensors during manufacturing to meet or exceed OE specifications. The 25571 is backed by NTK’s OE-focused engineering and application coverage.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731438395573,"sku":"BFPZ-25571","price":152.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25571_Fro.jpg?v=1794296350","url":"https:\/\/www.partcatalog.com\/products\/ntk-25571-oxygen-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}