{"product_id":"ntk-27021-air-fuel-ratio-sensor-upstream-left","title":"NTK 27021 Air \/ Fuel Ratio Sensor - Upstream Left","description":"\u003ch2\u003eDirect-Fit Air\/Fuel Sensor\u003c\/h2\u003e\u003cp\u003eNTK 27021 is a direct-fit air\/fuel ratio sensor for specific Ford Transit applications. It uses a heated, 5-wire design and is built for precise exhaust feedback in OE-style replacement service.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit design for specific applications\u003c\/li\u003e\n\u003cli\u003eHeated sensor with 5-wire construction\u003c\/li\u003e\n\u003cli\u003e17.5-inch wiring harness length\u003c\/li\u003e\n\u003cli\u003e18.000 mm thread diameter with 0.38 thread length\u003c\/li\u003e\n\u003cli\u003eSpecific-fit replacement, not universal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 27021 is part of the Direct Fit 5-Wire A\/F Sensor line, engineered for straightforward replacement where the original sensor uses the same configuration. NTK is known for oxygen and air\/fuel sensing technology, and this sensor reflects that focus with OE-style fit, form, and function. It is a heated sensor with a specific-fit design, making it suitable for service work on Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD applications listed below. This part cross-references GK4Z9F472A 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 air\/fuel ratio sensor\u003c\/li\u003e\n\u003cli\u003eRestoring accurate exhaust mixture feedback to the engine control system\u003c\/li\u003e\n\u003cli\u003eAddressing sensor-related fault codes tied to mixture monitoring\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues caused by inaccurate oxygen sensing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the connector, thread size, and harness length before installation. This sensor is listed as a specific-fit part and should be matched to the exact vehicle application and sensor location shown in the fitment data. The mounting bracket is not included.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK manufactures oxygen sensors with extensive testing during production to meet or exceed OE specifications. The brand is part of the NGK family of products and is recognized for OE application technology and broad coverage.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731445801141,"sku":"BFPZ-27021","price":58.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_27021_Fro.jpg?v=1794297096","url":"https:\/\/www.partcatalog.com\/products\/ntk-27021-air-fuel-ratio-sensor-upstream-left","provider":"PartCatalog","version":"1.0","type":"link"}