{"product_id":"4254214c91-genuine-international®-def-quality-sensor","title":"4254214C91 | Genuine International® Def Quality Sensor","description":"\u003cp\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e: Def Tank 15 Gallon QL SSi Sensor for Navistar\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e: New\u003cbr\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e: International®\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 4254214C91\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp\u003e\u003cstrong\u003eDEF Header Height (IN)\u003c\/strong\u003e\u003cbr\u003e18\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDEF Return Fitting Dia. (IN)\u003c\/strong\u003e\u003cbr\u003e5\/16 SAE J2044\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eCoolant Outlet Fitting Dia. (IN)\u003c\/strong\u003e\u003cbr\u003e5\/8 Hose Bead\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eTank Interface\u003c\/strong\u003e\u003cbr\u003e6 Bolt\u003c\/p\u003e\n\u003cdiv class=\"et_pb_module et_pb_blurb et_pb_blurb_7  et_pb_text_align_left  et_pb_blurb_position_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_blurb_content\"\u003e\n\u003cdiv class=\"et_pb_blurb_container\"\u003e\n\u003ch4 class=\"et_pb_module_header\"\u003e\u003cspan\u003eElectrical Connector\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv class=\"et_pb_blurb_description\"\u003e\n\u003cp\u003e\u003cspan\u003eDeutsch DT4 (STD)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_blurb et_pb_blurb_8  et_pb_text_align_left  et_pb_blurb_position_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_blurb_content\"\u003e\n\u003cdiv class=\"et_pb_main_blurb_image\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_blurb_container\"\u003e\n\u003ch4 class=\"et_pb_module_header\"\u003e\u003cspan\u003eSensor Type\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv class=\"et_pb_blurb_description\"\u003e\n\u003cp\u003e\u003cspan\u003eDigital (canbus)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_blurb et_pb_blurb_9  et_pb_text_align_left  et_pb_blurb_position_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_blurb_content\"\u003e\n\u003cdiv class=\"et_pb_main_blurb_image\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_blurb_container\"\u003e\n\u003ch4 class=\"et_pb_module_header\"\u003e\u003cspan\u003eDEF Suction Fitting Dia. (IN)\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv class=\"et_pb_blurb_description\"\u003e\n\u003cp\u003e\u003cspan\u003e3\/8 SAE J2044\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_blurb et_pb_blurb_10  et_pb_text_align_left  et_pb_blurb_position_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_blurb_content\"\u003e\n\u003cdiv class=\"et_pb_main_blurb_image\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_blurb_container\"\u003e\n\u003ch4 class=\"et_pb_module_header\"\u003e\u003cspan\u003eCoolant Inlet Fitting Dia. (IN)\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv class=\"et_pb_blurb_description\"\u003e\n\u003cp\u003e\u003cspan\u003e5\/8 Hose Bead\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"et_pb_module et_pb_blurb et_pb_blurb_11  et_pb_text_align_left  et_pb_blurb_position_left et_pb_bg_layout_light\"\u003e\n\u003cdiv class=\"et_pb_blurb_content\"\u003e\n\u003cdiv class=\"et_pb_main_blurb_image\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"et_pb_blurb_container\"\u003e\n\u003ch4 class=\"et_pb_module_header\"\u003e\u003cspan\u003eIn-Tank Filter\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv class=\"et_pb_blurb_description\"\u003e\n\u003cp\u003e\u003cspan\u003e40µ\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp\u003e\u003cb\u003eCompatible Vehicles \u0026amp; Engines\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eVehicle Compatibility:\u003c\/b\u003e Engineered for \u003cb\u003eNavistar International®\u003c\/b\u003e medium and heavy-duty trucks equipped with a 15-gallon DEF tank configuration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInternational Models:\u003c\/b\u003e LT Series, RH Series, MV Series, HV Series, DuraStar, WorkStar, ProStar, and LoneStar models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBus Applications:\u003c\/b\u003e IC Bus® CE\/RE Series school and commercial buses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eEngine Architecture:\u003c\/b\u003e Compatible with \u003cb\u003eNavistar International A26\u003c\/b\u003e engines as well as \u003cb\u003eCummins® ISB6.7, L9, ISX15, and X15\u003c\/b\u003e diesel engines utilizing standard Navistar\/IC Bus SCR systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003e15-Gallon DEF Tank Assembly with SSI QLS Sensor\u003c\/b\u003e is a complete Original Equipment (OE) Diesel Exhaust Fluid reservoir and sensing assembly designed for International trucks and IC Bus commercial vehicles.\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp\u003e\u003cb\u003e1. What is it?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003ePart is a factory replacement assembly that includes the 15-gallon polyethylene fluid tank alongside an integrated SSI Quality Level Sensor (QLS) header unit. It stores Diesel Exhaust Fluid (AdBlue) and actively relays fluid metrics to the vehicle’s Engine Control Module (ECM) via the J1939 CAN bus network to manage the Selective Catalytic Reduction (SCR) system.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2. Integrated Components \u0026amp; Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e15-Gallon Heavy-Duty Reservoir:\u003c\/b\u003e Chemical-resistant polyethylene tank designed to resist cracking and harsh environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eUltrasonic DEF Level Sensing:\u003c\/b\u003e Continuously measures remaining DEF volume to display accurate tank levels on the dashboard.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eUrea Concentration \/ Quality Monitoring:\u003c\/b\u003e Ensures fluid maintains the required ~32.5% urea concentration to prevent SCR catalytic poisoning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFluid Temperature \u0026amp; Thawing Circuit:\u003c\/b\u003e Monitors fluid temperature and uses an internal coolant loop connection to melt frozen DEF in cold winter weather.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSuction \u0026amp; Return Lines:\u003c\/b\u003e Includes quick-connect ports for fluid suction to the dosing pump and excess return flow back into the tank.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of Faulty\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"height: 19.5938px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e \n\u003cp\u003e\u003cb\u003e1. Engine Power Derate \u0026amp; Forced Speed Restrictions\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eBecause emission regulations strictly enforce SCR system operation, a failure in the JKA03703 assembly triggers progressive engine derates:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInitial Warning:\u003c\/b\u003e Check Engine and Stop Engine \/ Emissions lights illuminate on the instrument panel with audible warning chimes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePower Reduction:\u003c\/b\u003e Engine horsepower and torque drop by \u003cb\u003e25% to 40%\u003c\/b\u003e, significantly impairing highway driving and heavy hauling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e5 MPH (8 km\/h) Low-Idle Lockout:\u003c\/b\u003e If the fault is ignored past the countdown timer, the truck is forced into a \u003cb\u003e5 mph crawl mode\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e2. Diagnostic Trouble Codes (DTCs)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eConnecting Navistar ServiceMaxx or Cummins Insite diagnostic software will pull specific J1939 fault codes associated with the SSI QLS tank header:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSPN 1761 \/ FMI 9 or 19:\u003c\/b\u003e DEF Tank Level - Abnormal Update Rate or Communication Error.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSPN 3031 \/ FMI 2 or 9:\u003c\/b\u003e DEF Tank Temperature - Data Erratic or Incorrect.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSPN 3516 \/ FMI 2 or 12:\u003c\/b\u003e DEF Concentration \/ Quality - Bad Device or Invalid Signal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSPN 3364 \/ FMI 9:\u003c\/b\u003e Improper DEF Quality Detected.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e3. Incorrect or Stuck DEF Level Gauge\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA failed ultrasonic level circuit inside the SSI QLS sensor header causes improper readings on the dash:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eThe DEF level gauge stays stuck at \u003cb\u003e100% (Full)\u003c\/b\u003e or drops instantly to \u003cb\u003e0% (Empty)\u003c\/b\u003e despite the 15-gallon tank being completely full.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRepeated \"Refill DEF Tank\" alerts trigger unexpectedly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e4. False \"Poor DEF Quality\" Alerts\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAn internal failure in the concentration sensor sends bad urea density readings to the ECM:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eThe dashboard displays warnings like \u003cb\u003e\"Incompatible DEF Detected\"\u003c\/b\u003e or \u003cb\u003e\"Service DEF System\"\u003c\/b\u003e even when filled with clean, high-purity fluid (~32.5% urea).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e5. DEF Tank Cracks, Leaks, or Freezing Issues\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eBecause includes both the 15-gallon tank shell and the header unit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePhysical Damage:\u003c\/b\u003e Cracks or impact damage on the polyethylene tank result in visible DEF fluid leaks (evidenced by white crystalline urea deposits around the tank base).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHeating Loop Failure:\u003c\/b\u003e In freezing weather, if the internal thermistor or coolant heating loop fails, frozen DEF cannot thaw, causing dosing pump starvation and active SCR pressure codes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer information\u003c\/strong\u003e\u003cbr\u003eNavistar® is a proud manufacturer of some of the widely used trucks, yellow school buses, defense vehicles, and engines. It was recognized as the first truck and engine manufacturer to be certified by the EPA for meeting 2007 standards for hydrocarbons and particulate matter. But the company's global portfolio is not limited to its line of vehicles and engines—it also carries high-quality replacement parts and accessories to keep all these working in top condition at all times. From hose fuel, bolts, plugs, rivets, and bearings to flashers, incandescent lamps, camshaft brake, gasket injector, and spring door locks, Navistar has also got you covered.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003eFirst Truck Parts offers a \u003cstrong\u003e365-days warranty\u003c\/strong\u003e for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.\u003c\/p\u003e\n\u003cdiv id=\"gtx-trans\" style=\"position: absolute; left: 200px; top: 113px;\"\u003e\n\u003cdiv class=\"gtx-trans-icon\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"International","offers":[{"title":"Default Title","offer_id":49064890597620,"sku":"4254214C91","price":529.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/1479\/5764\/files\/4097728c91_2_b1c91727-0185-4b56-bd46-6d98658b1c74.png?v=1762805859","url":"https:\/\/firsttruckparts.com\/en-ca\/products\/4254214c91-genuine-international%c2%ae-def-quality-sensor","provider":"First Truck Parts","version":"1.0","type":"link"}