{"product_id":"ntk-25239-oxygen-sensor-upstream-left","title":"NTK 25239 Oxygen Sensor - Upstream Left","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eNTK Direct Fit Oxygen Sensor 25239 is a specific-fit heated oxygen sensor built for emission control service. It is engineered for threaded installation and uses a 4-wire design with a 9.84 wiring harness length and 18.000 thread diameter.\u003c\/p\u003e\u003cp\u003eCompatible with 2015-2017 Kia K900, upstream left. This part cross-references 392103C590 for the same application.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for precise exhaust feedback\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for direct replacement service\u003c\/li\u003e\n\u003cli\u003eThreaded mounting for a secure sensor installation\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with integrated harness length\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplication Details\u003c\/h2\u003e\u003cp\u003eFits 2015-2017 Kia K900, upstream left, bank 2 sensor 1. The NTK 25239 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific coverage and OE-style fit, form, and function. NTK is known for oxygen sensor manufacturing within the NGK family and applies ceramic technology control from raw material through finished production.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFaulty oxygen sensor readings that can trigger emissions-related trouble codes\u003c\/li\u003e\n\u003cli\u003eSlow sensor response affecting fuel control and exhaust monitoring\u003c\/li\u003e\n\u003cli\u003eWiring or connector wear on an aging sensor assembly\u003c\/li\u003e\n\u003cli\u003eReplacement needs for a threaded, heated upstream oxygen sensor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Quality\u003c\/h2\u003e\u003cp\u003eVerify the connector style, thread diameter, harness length, and upstream left location before installation. Confirm the vehicle application by part number 25239 and the OE cross-reference 392103C590 to ensure the correct emission control sensor is selected.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK tests oxygen sensors during manufacturing to meet or exceed OE specifications. The brand’s OE-supplier background and ceramic manufacturing expertise support consistent fit and reliable performance.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731436232885,"sku":"BFPZ-25239","price":86.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25239_Fro.jpg?v=1794296089","url":"https:\/\/www.partcatalog.com\/products\/ntk-25239-oxygen-sensor-upstream-left","provider":"PartCatalog","version":"1.0","type":"link"}