{"product_id":"4163699c91-genuine-oem-international-navistar-def-qls-header","title":"4163699C91 | Genuine OEM International DEF QLS Header 15.5, 23G","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003e4163699C91 | Genuine OEM International\/Navistar DEF QLS Header 15.5–23G\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 4163699C91 Genuine OEM International\/Navistar DEF QLS Header is a diesel exhaust fluid tank header assembly designed for compatible International truck DEF systems. It integrates the required DEF sensing and fluid management components at the tank and is designed for compatible 15.5–23 gallon DEF tank applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003ePRODUCT INFORMATION\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePart Number: 4163699C91\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBrand: International® \/ Navistar®\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: New\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eComponent: DEF QLS Header\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFuel Type: Diesel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDEF Tank Capacity: 15.5–23 Gallons\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSystem: Diesel Exhaust Fluid (DEF) \/ SCR\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSensor Technology: QLS (Quality Level Sensor)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eAPPLICATIONS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCompatible with selected International\/Navistar diesel truck applications using compatible 15.5–23 gallon DEF tanks. Exact fitment depends on the truck model, model year, DEF tank configuration, electrical connections, and emissions system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eFUNCTION\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe DEF QLS Header is installed in the DEF tank and supports monitoring of DEF level, quality, and related tank operating parameters. It works as part of the vehicle's DEF\/SCR aftertreatment system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA worn, damaged, or failing \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDEF QLS Header\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e may cause symptoms such as:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e• DEF level readings that are inaccurate\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• DEF quality monitoring faults\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• DEF system warning messages\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• SCR or aftertreatment fault codes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Incorrect DEF tank sensor readings\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Check engine or emissions system warnings\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWHY REPLACE A DEF QLS HEADER?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA damaged or malfunctioning DEF QLS Header can affect DEF level and quality monitoring and may contribute to aftertreatment system faults. Replacing the header with the correct OEM component can help restore proper DEF tank sensing and system operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eFITMENT INFORMATION\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDescription contains the focus keyword 2–4 times per 300 words.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePlease verify Part Number, VIN, truck model, model year, DEF tank capacity, tank configuration, electrical connections, and emissions system before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIf you are unsure whether this part is correct for your vehicle, please contact us with your VIN and original part number. We are happy to help verify compatibility before purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eGENUINE INTERNATIONAL® \/ NAVISTAR® PART\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePart Number: 4163699C91\u003c\/span\u003e\u003c\/p\u003e","brand":"INTERNATIONAL\/NAVISTAR","offers":[{"title":"Default Title","offer_id":49687406117123,"sku":"SY1061","price":475.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0838\/9289\/6003\/files\/International_DEF_Sensor_Head.jpg?v=1791214464","url":"https:\/\/truckpartsplanet.com\/es\/products\/4163699c91-genuine-oem-international-navistar-def-qls-header","provider":"TRUCK PARTS PLANET","version":"1.0","type":"link"}