{"product_id":"4353001c91-genuine-oem-international-navistar-def-header-7-gallon-qls-1-ssi","title":"4353001C91 | Genuine OEM International DEF Header 7 Gallon QLS","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e4353001C91 | Genuine OEM International\/Navistar DEF Header 7 Gallon QLS 1% SSI\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 4353001C91 Diesel Exhaust Fluid (DEF) Header is a Genuine OEM International\/Navistar component designed for compatible 7-gallon DEF tank applications. The header incorporates QLS 1% SSI sensing technology and supports DEF tank monitoring within the vehicle's SCR aftertreatment system.\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\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePart Number:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 4353001C91\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e International\/Navistar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCondition:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e New\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eComponent:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e DEF Header\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSensor Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e QLS 1% SSI\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDEF Tank Capacity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 7 gallons\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFuel Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Diesel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSystem:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Diesel Exhaust Fluid \/ SCR Aftertreatment\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eAPPLICATIONS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eCompatible International\/Navistar diesel truck applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e7-gallon DEF tank systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDEF and SCR aftertreatment systems using compatible QLS 1% SSI components\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eExact fitment depends on vehicle configuration, DEF tank design, sensor system, and original equipment specifications.\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 header is installed in the DEF tank and supports monitoring of diesel exhaust fluid conditions through the integrated QLS 1% SSI sensing system. It provides sensor information used by the vehicle's DEF and SCR systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eA worn, damaged, or failing DEF Header may cause symptoms such as:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eIncorrect DEF level readings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDEF system warning messages\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDEF quality or sensor-related faults\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSCR or aftertreatment fault codes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck engine or emissions warning indicators\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncorrect DEF system information\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWHY REPLACE A DEF HEADER?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA properly functioning DEF header is important for accurate monitoring of the DEF tank and reliable SCR aftertreatment operation. Replacing a damaged or failed header can help restore correct DEF sensing and system communication.\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\u003eAlways verify the part number, VIN, vehicle model, DEF tank capacity, QLS\/SSI configuration, and original equipment specifications before ordering. Exact compatibility may vary by application.\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\u003cstrong\u003e\u003cspan\u003ePart Number:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 4353001C91\u003c\/span\u003e\u003c\/p\u003e","brand":"INTERNATIONAL\/NAVISTAR","offers":[{"title":"Default Title","offer_id":49715213730051,"sku":"SY1058","price":759.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0838\/9289\/6003\/files\/4353001C91_DEF_Header.jpg?v=1790517781","url":"https:\/\/truckpartsplanet.com\/es\/products\/4353001c91-genuine-oem-international-navistar-def-header-7-gallon-qls-1-ssi","provider":"TRUCK PARTS PLANET","version":"1.0","type":"link"}