{"product_id":"ntk-25583-oxygen-sensor-upstream","title":"NTK 25583 Oxygen Sensor - Upstream","description":"\u003ch2\u003eDirect Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eThe NTK 25583 is a direct fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It is engineered for accurate air\/fuel feedback and OE-style fit, form, and function.\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 applications.\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with a 45.75-inch wiring harness.\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter and threaded mounting type.\u003c\/li\u003e\n\u003cli\u003eNTK 25583 is manufactured and tested to meet or exceed OE specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 25583 is part of the Direct Fit Oxygen Sensor line, a product family focused on streamlined coverage and OE application technology. NTK, part of the NGK family of products, applies ceramic sensor expertise and manufacturing control from raw material through finished sensor construction. This oxygen sensor is designed for specific-fit replacement use and supports precise exhaust feedback where accurate mixture control is required. It is a strong match for Mercedes-Benz C230 oxygen sensor replacement needs, especially when the application calls for an upstream sensor with OE-style dimensions and connector layout. This part number, 25583, is also cross-referenced to Bosch 15083 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light concerns related to oxygen sensor performance.\u003c\/li\u003e\n\u003cli\u003eIncorrect air\/fuel ratio feedback from a worn sensor.\u003c\/li\u003e\n\u003cli\u003eSlow sensor response during closed-loop operation.\u003c\/li\u003e\n\u003cli\u003eFitment issues caused by using a universal sensor instead of a specific-fit part.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Quality\u003c\/h2\u003e\u003cp\u003eFits 1997-2000 Mercedes-Benz C230, upstream. Verify the threaded mounting style, 18 mm thread diameter, 4-wire layout, and harness length before installation. The sensor is intended for direct-fit replacement on the listed application, and part number 25583 should be matched to the vehicle’s OE configuration. NTK states these oxygen sensors are extensively tested during manufacturing to support quality and reliability that meets or exceeds OE specifications.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731438756021,"sku":"BFPZ-25583","price":79.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25583_Fro.jpg?v=1794296396","url":"https:\/\/www.partcatalog.com\/products\/ntk-25583-oxygen-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}