{"product_id":"4099788c92-genuine-international®-def-tank-7-gal-without-sensor-qls-25-5l","title":"4099788C92 | Genuine International® Def Tank 7 Gal Without Sensor QLS 25.5L","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eThe DEF tank \u003cstrong\u003e4099788C92 \u003c\/strong\u003estores Diesel Exhaust Fluid, which the truck uses to clean up exhaust emissions after combustion.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 4099788C92\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: International\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-start=\"160\" data-end=\"176\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003eFits 4099788C92 \u003c\/strong\u003eFor \u003cspan\u003eNavistar \/ International\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003eEngines: \u003c\/b\u003eCummins QLS\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul id=\"catalogModels\" class=\"nav catalog\"\u003e\u003c\/ul\u003e\n\u003cp data-start=\"160\" data-end=\"353\"\u003e\u003cstrong\u003ePurpose of using 4099788C92:\u003c\/strong\u003e\u003cstrong data-start=\"585\" data-end=\"597\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-end=\"272\" data-start=\"165\"\u003eThe purpose of using a DEF tank in a truck is to reduce harmful exhaust emissions so the truck can:\u003c\/p\u003e\n\u003cul data-end=\"404\" data-start=\"273\"\u003e\n\u003cli data-end=\"309\" data-start=\"273\"\u003e\n\u003cp data-end=\"309\" data-start=\"275\"\u003eMeet government emissions laws\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"348\" data-start=\"310\"\u003e\n\u003cp data-end=\"348\" data-start=\"312\"\u003eRun cleaner and more efficiently\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"404\" data-start=\"349\"\u003e\n\u003cp data-end=\"404\" data-start=\"351\"\u003eAvoid heavy fines, shutdowns, or restricted operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"481\" data-start=\"406\"\u003eWithout a DEF system, most modern diesel trucks cannot legally operate.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-start=\"160\" data-end=\"353\"\u003e\u003cstrong data-start=\"585\" data-end=\"597\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad DEF Tank 4099788C92:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-start=\"150\" data-end=\"193\"\u003e\u003cstrong\u003eDashboard warning signs (first clues)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"194\" data-end=\"250\"\u003eThese usually show up \u003cstrong data-start=\"216\" data-end=\"226\"\u003ebefore\u003c\/strong\u003e the truck limits power:\u003c\/p\u003e\n\u003cul data-start=\"252\" data-end=\"490\"\u003e\n\u003cli data-start=\"252\" data-end=\"294\"\u003e\n\u003cp data-start=\"254\" data-end=\"294\"\u003e\u003cstrong data-start=\"254\" data-end=\"273\"\u003e“DEF Level Low”\u003c\/strong\u003e (even after filling)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"295\" data-end=\"319\"\u003e\n\u003cp data-start=\"297\" data-end=\"319\"\u003e\u003cstrong data-start=\"297\" data-end=\"319\"\u003e“Poor DEF Quality”\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"320\" data-end=\"346\"\u003e\n\u003cp data-start=\"322\" data-end=\"346\"\u003e\u003cstrong data-start=\"322\" data-end=\"346\"\u003e“Service DEF System”\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"347\" data-end=\"393\"\u003e\n\u003cp data-start=\"349\" data-end=\"393\"\u003e\u003cstrong data-start=\"349\" data-end=\"371\"\u003eCheck Engine Light\u003c\/strong\u003e tied to DEF\/SCR codes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"394\" data-end=\"490\"\u003e\n\u003cp data-start=\"396\" data-end=\"424\"\u003e\u003cstrong data-start=\"396\" data-end=\"418\"\u003eCountdown messages\u003c\/strong\u003e like:\u003c\/p\u003e\n\u003cul data-start=\"427\" data-end=\"490\"\u003e\n\u003cli data-start=\"427\" data-end=\"460\"\u003e\n\u003cp data-start=\"429\" data-end=\"460\"\u003e“200 miles until speed limited”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"463\" data-end=\"490\"\u003e\n\u003cp data-start=\"465\" data-end=\"490\"\u003e“No restart in ___ miles”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"492\" data-end=\"550\"\u003e⚠️ If warnings stay on after refilling, that’s a red flag.\u003c\/p\u003e\n\u003cp data-start=\"557\" data-end=\"589\"\u003e\u003cstrong\u003eEngine derate \/ power loss\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"590\" data-end=\"625\"\u003eA bad DEF tank or sensor can cause:\u003c\/p\u003e\n\u003cul data-start=\"626\" data-end=\"758\"\u003e\n\u003cli data-start=\"626\" data-end=\"646\"\u003e\n\u003cp data-start=\"628\" data-end=\"646\"\u003eReduced horsepower\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"647\" data-end=\"670\"\u003e\n\u003cp data-start=\"649\" data-end=\"670\"\u003eSluggish acceleration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"671\" data-end=\"715\"\u003e\n\u003cp data-start=\"673\" data-end=\"715\"\u003eSpeed limited to 55, 25, or even \u003cstrong data-start=\"706\" data-end=\"715\"\u003e5 mph\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"716\" data-end=\"758\"\u003e\n\u003cp data-start=\"718\" data-end=\"758\"\u003eTruck refusing to restart after shutdown\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"760\" data-end=\"817\"\u003eThis happens even if the engine itself is perfectly fine.\u003c\/p\u003e\n\u003cp data-start=\"824\" data-end=\"862\"\u003e\u003cstrong\u003eFalse DEF readings (very common)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"863\" data-end=\"888\"\u003eBad DEF tank sensors can:\u003c\/p\u003e\n\u003cul data-start=\"889\" data-end=\"999\"\u003e\n\u003cli data-start=\"889\" data-end=\"915\"\u003e\n\u003cp data-start=\"891\" data-end=\"915\"\u003eShow \u003cstrong data-start=\"896\" data-end=\"915\"\u003eempty when full\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"916\" data-end=\"938\"\u003e\n\u003cp data-start=\"918\" data-end=\"938\"\u003eJump around randomly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"939\" data-end=\"959\"\u003e\n\u003cp data-start=\"941\" data-end=\"959\"\u003eStick at one level\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"960\" data-end=\"999\"\u003e\n\u003cp data-start=\"962\" data-end=\"999\"\u003eTrigger “poor quality” with fresh DEF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1001\" data-end=\"1054\"\u003eThis is one of the \u003cstrong data-start=\"1020\" data-end=\"1053\"\u003emost common DEF tank failures\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1061\" data-end=\"1088\"\u003e\u003cstrong\u003eCold-weather problems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1089\" data-end=\"1118\"\u003eIf the DEF tank heater fails:\u003c\/p\u003e\n\u003cul data-start=\"1119\" data-end=\"1243\"\u003e\n\u003cli data-start=\"1119\" data-end=\"1146\"\u003e\n\u003cp data-start=\"1121\" data-end=\"1146\"\u003eDEF stays frozen too long\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1147\" data-end=\"1185\"\u003e\n\u003cp data-start=\"1149\" data-end=\"1185\"\u003eWarning lights stay on after startup\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1186\" data-end=\"1215\"\u003e\n\u003cp data-start=\"1188\" data-end=\"1215\"\u003eTruck derates in cold temps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1216\" data-end=\"1243\"\u003e\n\u003cp data-start=\"1218\" data-end=\"1243\"\u003eHeater fault codes appear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1245\" data-end=\"1310\"\u003eDEF is supposed to thaw within minutes—if not, something’s wrong.\u003c\/p\u003e\n\u003cp data-start=\"1317\" data-end=\"1351\"\u003e\u003cstrong\u003eDEF leaks or crystallization\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1352\" data-end=\"1361\"\u003eLook for:\u003c\/p\u003e\n\u003cul data-start=\"1362\" data-end=\"1483\"\u003e\n\u003cli data-start=\"1362\" data-end=\"1417\"\u003e\n\u003cp data-start=\"1364\" data-end=\"1417\"\u003eWhite, chalky residue around tank, lines, or injector\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1418\" data-end=\"1440\"\u003e\n\u003cp data-start=\"1420\" data-end=\"1440\"\u003eStrong ammonia smell\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1441\" data-end=\"1483\"\u003e\n\u003cp data-start=\"1443\" data-end=\"1483\"\u003eWet spots under the truck (clear liquid)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1485\" data-end=\"1506\"\u003eCrystallized DEF can:\u003c\/p\u003e\n\u003cul data-start=\"1507\" data-end=\"1553\"\u003e\n\u003cli data-start=\"1507\" data-end=\"1520\"\u003e\n\u003cp data-start=\"1509\" data-end=\"1520\"\u003eBlock lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1521\" data-end=\"1535\"\u003e\n\u003cp data-start=\"1523\" data-end=\"1535\"\u003eKill sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1536\" data-end=\"1553\"\u003e\n\u003cp data-start=\"1538\" data-end=\"1553\"\u003eDamage the pump\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1560\" data-end=\"1599\"\u003e\u003cstrong\u003eTrouble codes related to DEF tank\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1600\" data-end=\"1619\"\u003eCommon fault areas:\u003c\/p\u003e\n\u003cul data-start=\"1620\" data-end=\"1713\"\u003e\n\u003cli data-start=\"1620\" data-end=\"1638\"\u003e\n\u003cp data-start=\"1622\" data-end=\"1638\"\u003eDEF level sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1639\" data-end=\"1655\"\u003e\n\u003cp data-start=\"1641\" data-end=\"1655\"\u003eQuality sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1656\" data-end=\"1676\"\u003e\n\u003cp data-start=\"1658\" data-end=\"1676\"\u003eTemperature sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1677\" data-end=\"1690\"\u003e\n\u003cp data-start=\"1679\" data-end=\"1690\"\u003eTank heater\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1691\" data-end=\"1713\"\u003e\n\u003cp data-start=\"1693\" data-end=\"1713\"\u003eDEF pump inside tank\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1715\" data-end=\"1768\"\u003eEven one failed sensor can trigger a \u003cstrong data-start=\"1752\" data-end=\"1767\"\u003efull derate\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1775\" data-end=\"1823\"\u003e\u003cstrong\u003ePoor DEF quality warning (when DEF is fine)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1824\" data-end=\"1843\"\u003eThis usually means:\u003c\/p\u003e\n\u003cul data-start=\"1844\" data-end=\"1938\"\u003e\n\u003cli data-start=\"1844\" data-end=\"1864\"\u003e\n\u003cp data-start=\"1846\" data-end=\"1864\"\u003eBad quality sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1865\" data-end=\"1904\"\u003e\n\u003cp data-start=\"1867\" data-end=\"1904\"\u003eContaminated tank (fuel, water, dirt)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1905\" data-end=\"1938\"\u003e\n\u003cp data-start=\"1907\" data-end=\"1938\"\u003eDEF concentration reading wrong\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1940\" data-end=\"2008\"\u003eFresh DEF + warning still on = \u003cstrong data-start=\"1971\" data-end=\"1992\"\u003etank\/sensor issue\u003c\/strong\u003e, not the fluid.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-start=\"97\" data-end=\"476\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eAbout the Manufacturer – \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong data-start=\"97\" data-end=\"151\"\u003eInternational \/ Navistar:\u003c\/strong\u003e\u003cbr data-start=\"151\" data-end=\"154\"\u003eInternational, a brand of \u003cstrong data-start=\"180\" data-end=\"218\"\u003eNavistar International Corporation\u003c\/strong\u003e, is a leading American manufacturer of commercial trucks, buses, and diesel engines. With a history dating back to the early 1900s, International is known for producing durable and reliable vehicles used in freight, construction, and municipal operations.\u003c\/p\u003e\n\u003cp data-start=\"478\" data-end=\"707\"\u003eNavistar has built a strong reputation in the trucking industry by focusing on innovation, performance, and long-term dependability. Their vehicles and components are trusted by fleets and drivers across North America and beyond.\u003c\/p\u003e","brand":"International","offers":[{"title":"Default Title","offer_id":50478221426935,"sku":"4099788C92","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/photo_2026-02-06_04-09-40_6.jpg?v=1770396086","url":"https:\/\/forcetruckparts.com\/products\/4099788c92-genuine-international%c2%ae-def-tank-7-gal-without-sensor-qls-25-5l","provider":"Force Truck Parts","version":"1.0","type":"link"}