{"product_id":"ntk-24659-air-fuel-ratio-sensor-upstream","title":"NTK 24659 Air \/ Fuel Ratio Sensor - Upstream","description":"\u003ch2\u003eDirect-Fit Air\/Fuel Ratio Sensor\u003c\/h2\u003e\u003cp\u003eNTK 24659 is a direct-fit, heated air\/fuel ratio sensor built for specific import applications. It uses a 4-wire design and OE-style dimensions to support accurate exhaust feedback where precise mixture control matters.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit replacement for specific applications\u003c\/li\u003e\n\u003cli\u003eHeated sensor design for faster operating response\u003c\/li\u003e\n\u003cli\u003e4-wire configuration for the correct electrical interface\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter with 0.38 thread length\u003c\/li\u003e\n\u003cli\u003e31.0 wiring harness length for proper routing\u003c\/li\u003e\n\u003cli\u003eMounting bracket not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 24659 is engineered as a specific-fit air\/fuel ratio sensor for the Saab 9-2X and Subaru Impreza in upstream Bank 1 Sensor 1 applications. As part of NTK's Direct Fit 4-Wire A\/F Sensor line, it is built to match OE-style fit, form, and function for vehicles that rely on accurate air-fuel monitoring. The part number 24659 is also referenced in cross-application listings such as Bosch 15537 and DENSO Auto Parts 234-9011 for the same application.\u003c\/p\u003e\u003cp\u003eNTK draws on its oxygen-sensor manufacturing background and ceramic technology to produce sensors that are extensively tested during manufacturing for quality and reliability. For buyers searching for a Subaru Impreza upstream air\/fuel ratio sensor or a Saab 9-2X Bank 1 Sensor 1 replacement, NTK 24659 provides a direct-fit solution with the correct heated 4-wire setup.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a failed upstream air\/fuel ratio sensor\u003c\/li\u003e\n\u003cli\u003eRestoring accurate fuel mixture feedback to the engine control system\u003c\/li\u003e\n\u003cli\u003eAddressing sensor-related drivability or emissions faults\u003c\/li\u003e\n\u003cli\u003eCorrecting wiring or connector mismatch from an incorrect sensor\u003c\/li\u003e\n\u003cli\u003eServicing OE-style emissions control on Saab 9-2X and Subaru Impreza applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle's year, make, model, and upstream Bank 1 Sensor 1 location before ordering. Confirm the 4-wire heated sensor configuration and compare the thread diameter, thread length, and harness length to the original part. The mounting bracket is not included, so reuse or source any required bracket separately if your application uses one.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that this sensor is extensively tested during manufacturing and built to meet or exceed OE specifications. NTK 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":53731433545909,"sku":"BFPZ-24659","price":221.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_24659_Fro.jpg?v=1794295771","url":"https:\/\/www.partcatalog.com\/products\/ntk-24659-air-fuel-ratio-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}