{"product_id":"ntk-24315-air-fuel-ratio-sensor-upstream","title":"NTK 24315 Air \/ Fuel Ratio Sensor - Upstream","description":"\u003ch2\u003eDirect-Fit BMW Upstream Sensor\u003c\/h2\u003e\u003cp\u003eNTK 24315 is a direct-fit air\/fuel ratio sensor for select BMW applications. It uses a 5-wire heated design and specific-fit construction to match the original sensor layout for the listed upstream positions.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit replacement for the specified BMW upstream applications\u003c\/li\u003e\n\u003cli\u003eHeated air\/fuel ratio sensor with 5-wire configuration\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for OE-style installation and signal response\u003c\/li\u003e\n\u003cli\u003e18.000 mm thread diameter and 0.38 thread length\u003c\/li\u003e\n\u003cli\u003e39.3 wiring harness length for proper routing\u003c\/li\u003e\n\u003cli\u003eNTK 24315 is built for import and domestic sensor applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 24315 is an upstream air\/fuel ratio sensor engineered for select BMW 325i, 325Ci, 330i, 330Ci, 525i, 530i, and X3 applications. The sensor is part of NTK’s Direct Fit 5-Wire A\/F Sensor line, which focuses on OE-style replacement geometry and application-specific coverage. NTK 24315 is designed to match the original sensor configuration for the listed BMW fitments, including Bank 1 Sensor 1 and the corresponding upstream locations noted in the catalog data.\u003c\/p\u003e\u003cp\u003eNTK uses ceramic sensor technology and manufacturing controls developed from its OE sensor background. This part cross-references DENSO Auto Parts (e.g., 234-5137) for the same application.\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\u003eAddressing check engine lights related to mixture control\u003c\/li\u003e\n\u003cli\u003eRestoring accurate exhaust feedback to the engine management system\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues caused by slow or inaccurate sensor response\u003c\/li\u003e\n\u003cli\u003eSupporting proper fuel control on BMW 325i, 330i, and related models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the exact year, model, and upstream position before ordering. This sensor is specific fit, so connector style, thread size, and harness length should be matched to the original unit. The catalog lists no mounting bracket included.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand also notes its role as a major OE sensor supplier, with application coverage built around fit, form, and function.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731390193845,"sku":"BFPZ-24315","price":169.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_24315_Fro.jpg?v=1794295251","url":"https:\/\/www.partcatalog.com\/products\/ntk-24315-air-fuel-ratio-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}