{"title":"Cummins DEF Sensors","description":"\u003cp\u003eCummins DEF sensors monitor diesel exhaust fluid levels, quality, and temperature to ensure proper SCR system operation. Accurate sensor data is critical for emissions compliance and preventing engine derates. At Advanced Truck Parts, we supply Cummins DEF sensors designed for reliable performance in modern diesel engines.\u003c\/p\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eClick to view more\u003c\/summary\u003e\n\n\u003cbr\u003e\n\n\u003ch2\u003eCummins DEF Sensors in Aftertreatment Systems\u003c\/h2\u003e\n\u003cp\u003eDEF sensors are a key part of the Selective Catalytic Reduction (SCR) system. They provide real-time feedback to the ECM, allowing precise control of DEF dosing and emissions reduction.\u003c\/p\u003e\n\n\u003cp\u003eCummins DEF sensors typically monitor:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eDEF fluid level in the tank\u003c\/li\u003e\n\u003cli\u003eDEF temperature\u003c\/li\u003e\n\u003cli\u003eDEF quality (urea concentration)\u003c\/li\u003e\n\u003cli\u003eSystem pressure (on certain configurations)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis information ensures proper SCR performance and helps maintain compliance with emissions regulations.\u003c\/p\u003e\n\n\u003cbr\u003e\n\n\u003ch2\u003eHow DEF Sensors Impact Engine Performance\u003c\/h2\u003e\n\u003cp\u003eModern Cummins engines rely heavily on accurate DEF sensor readings. If incorrect values are detected, the ECM may limit engine performance to protect emissions compliance.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eControls DEF dosing rate into the exhaust stream\u003c\/li\u003e\n\u003cli\u003ePrevents operation with contaminated or incorrect DEF\u003c\/li\u003e\n\u003cli\u003eTriggers warning lights and fault codes when issues occur\u003c\/li\u003e\n\u003cli\u003eHelps maintain proper NOx reduction efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eSensor faults can quickly lead to derate conditions, making proper operation essential.\u003c\/p\u003e\n\n\u003cbr\u003e\n\n\u003ch2\u003eCommon Cummins Engine Applications\u003c\/h2\u003e\n\n\u003cp\u003eCummins DEF sensors are used in diesel engines equipped with SCR aftertreatment systems across multiple platforms.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCummins ISX CM2250 and CM2350 engines\u003c\/li\u003e\n\u003cli\u003eCummins X15 Efficiency and Performance Series\u003c\/li\u003e\n\u003cli\u003eCummins ISB 6.7L diesel engines\u003c\/li\u003e\n\u003cli\u003eKenworth, Peterbilt, Freightliner, and International trucks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDifferent emissions systems and calibrations may require specific sensor types, so verifying part numbers is important before replacement.\u003c\/p\u003e\n\n\u003cbr\u003e\n\n\u003ch2\u003eCommon DEF Sensor Failure Symptoms\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eCheck engine or SCR system warning lights\u003c\/li\u003e\n\u003cli\u003eDEF level or quality fault codes\u003c\/li\u003e\n\u003cli\u003eEngine derate conditions\u003c\/li\u003e\n\u003cli\u003eIncorrect DEF level readings\u003c\/li\u003e\n\u003cli\u003eNOx or SCR efficiency faults\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDEF sensor issues may be caused by contamination, crystallization buildup, electrical faults, or internal sensor failure.\u003c\/p\u003e\n\n\u003cbr\u003e\n\n\u003ch2\u003eInstallation \u0026amp; System Considerations\u003c\/h2\u003e\n\n\u003cp\u003eWhen replacing a DEF sensor, it’s important to inspect the full DEF system to avoid repeat failures.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCheck DEF tank for contamination\u003c\/li\u003e\n\u003cli\u003eInspect DEF lines and dosing injector for buildup\u003c\/li\u003e\n\u003cli\u003eVerify wiring harness and connectors\u003c\/li\u003e\n\u003cli\u003eUse proper DEF fluid meeting ISO 22241 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eMaintaining the entire DEF system helps ensure long-term reliability and proper emissions performance.\u003c\/p\u003e\n\n\u003cbr\u003e\n\n\u003ch2\u003eVerify Fitment Before You Buy\u003c\/h2\u003e\n\n\u003cp\u003eDEF sensors vary depending on engine model, CPL, and emissions configuration. To confirm compatibility before ordering, provide:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eEngine serial number (preferred)\u003c\/li\u003e\n\u003cli\u003eCPL number\u003c\/li\u003e\n\u003cli\u003eTruck year \/ make \/ model\u003c\/li\u003e\n\u003cli\u003eCurrent DEF sensor part number\u003c\/li\u003e\n\u003cli\u003eSensor type (level, quality, temperature)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis ensures the correct Cummins DEF sensor is selected for your application.\u003c\/p\u003e\n\n\u003cbr\u003e\n\n\u003ch2\u003eWhy Buy Cummins DEF Sensors from Advanced Truck Parts?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eFitment verification before purchase\u003c\/li\u003e\n\u003cli\u003eReliable aftertreatment components\u003c\/li\u003e\n\u003cli\u003eFast shipping to minimize downtime\u003c\/li\u003e\n\u003cli\u003eSupport for fleets and technicians\u003c\/li\u003e\n\u003cli\u003eCompetitive pricing on emissions system parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/details\u003e","products":[{"product_id":"5511564-genuine-cummins-def-header-quality-level-sensor","title":"5511564 Genuine Cummins DEF Header Quality Level Sensor","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003e5511564 Genuine Cummins DEF Header Quality Level Sensor\u003c\/h2\u003e\n  \u003cp\u003e\n    This def header quality level sensor from CUMMINS is designed to deliver reliable performance and durability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDesigned to match or exceed applicable specifications\u003c\/li\u003e\n    \u003cli\u003eProvides the function required for the intended system or assembly\u003c\/li\u003e\n    \u003cli\u003eBuilt for dependable performance and service life\u003c\/li\u003e\n    \u003cli\u003eBacked by CUMMINS quality and engineering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"6\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eCUMMINS\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eDEF Header Quality Level Sensor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e5511564\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eOEM Cross Reference\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e4378049, 4353388\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e708548AT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e15.0 lb\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eBrand Information\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e CUMMINS\u003c\/p\u003e\n  \u003cp\u003e\n    Cummins is a leading global power technology company recognized for engines and related components engineered for performance and reliability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify part number, specifications, and application before installation.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"CUMMINS","offers":[{"title":"Default Title","offer_id":46366164058341,"sku":"5511564","price":899.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0315\/4437\/7480\/files\/4353388-genuine-cummins-def-header-quality-level-sensor-advanced-truck-parts-40362.jpg?v=1755287357"},{"product_id":"4378049-genuine-cummins-def-header-quality-level-sensor","title":"4378049 Genuine Cummins DEF Header Quality Level Sensor","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003e4378049 Genuine Cummins DEF Header Quality Level Sensor\u003c\/h2\u003e\n  \u003cp\u003e\n    This def header quality level sensor from CUMMINS is designed to deliver reliable performance and durability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDesigned to match or exceed applicable specifications\u003c\/li\u003e\n    \u003cli\u003eProvides the function required for the intended system or assembly\u003c\/li\u003e\n    \u003cli\u003eBuilt for dependable performance and service life\u003c\/li\u003e\n    \u003cli\u003eBacked by CUMMINS quality and engineering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"6\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eCUMMINS\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eDEF Header Quality Level Sensor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e4378049\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eOEM Cross Reference\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e5511564, 4353388\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e708548AT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e15.0 lb\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eBrand Information\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e CUMMINS\u003c\/p\u003e\n  \u003cp\u003e\n    Cummins is a leading global power technology company recognized for engines and related components engineered for performance and reliability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify part number, specifications, and application before installation.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"CUMMINS","offers":[{"title":"Default Title","offer_id":47524392468709,"sku":"4378049","price":899.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0315\/4437\/7480\/files\/4353388-genuine-cummins-def-header-quality-level-sensor-advanced-truck-parts-40362.jpg?v=1755287357"},{"product_id":"4353388-genuine-cummins-def-header-quality-level-sensor","title":"4353388 Genuine Cummins DEF Header Quality Level Sensor","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003e4353388 Genuine Cummins DEF Header Quality Level Sensor\u003c\/h2\u003e\n  \u003cp\u003e\n    This def header quality level sensor from CUMMINS is designed to deliver reliable performance and durability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDesigned to match or exceed applicable specifications\u003c\/li\u003e\n    \u003cli\u003eProvides the function required for the intended system or assembly\u003c\/li\u003e\n    \u003cli\u003eBuilt for dependable performance and service life\u003c\/li\u003e\n    \u003cli\u003eBacked by CUMMINS quality and engineering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"6\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eCUMMINS\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eDEF Header Quality Level Sensor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e4353388\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eOEM Cross Reference\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e5511564, 4378049\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e708548AT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e15.0 lb\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eBrand Information\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e CUMMINS\u003c\/p\u003e\n  \u003cp\u003e\n    Cummins is a leading global power technology company recognized for engines and related components engineered for performance and reliability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify part number, specifications, and application before installation.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"CUMMINS","offers":[{"title":"Default Title","offer_id":47524392763621,"sku":"4353388","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0315\/4437\/7480\/files\/4353388-genuine-cummins-def-header-quality-level-sensor-advanced-truck-parts-40362.jpg?v=1755287357"}],"url":"https:\/\/advancedtruckparts.com\/collections\/cummins-def-sensors.oembed","provider":"ADVANCED TRUCK PARTS","version":"1.0","type":"link"}