ATP Q21-6170-002K1T DEF Level and Quality Sensor for Paccar

ATP Q21-6170-002K1T DEF Level and Quality Sensor for Paccar Product Description Ensure reliable SCR system performance and prevent engine derates with this premium Advance Truck Parts (ATP) heavy-duty Diesel Exhaust Fluid (DEF) Level and Concentration Sensor. Engineered to meet or exceed OEM specifications, this sensor provides precise, real-time monitoring of fluid volume and urea purity in the reservoir. A failing DEF sensor is a frequent culprit for unexpected dashboard warnings and limp-mode triggers. This direct-replacement unit restores factory-level signal accuracy to keep your fleet running efficiently. Key Features Dual Monitoring: Accurately tracks both DEF fluid level and urea concentration to ensure proper emissions treatment. Plug-and-Play Setup: Built for an exact factory fit on Kenworth and Peterbilt applications without requiring harness modifications. Heavy-Duty Construction: Features upgraded, chemical-resistant internal components designed to withstand harsh thermal cycles and corrosive fluid environments. Technical Specifications Specification Detail Brand Advance Truck Parts (ATP) Part Type DEF Level & Quality / Concentration Sensor SKU / MPN Q21-6170-002K1T Condition New Fitment Type Direct Replacement Vehicle Fitment Application: Fits heavy-duty Kenworth and Peterbilt semi-trucks. Engine Systems: Compatible with Paccar MX and Cummins X15 emissions setups. Cross-Reference Interchanges Directly replaces and interchanges with the following Paccar/OEM numbers: Q21-6170-002K1T Q21-6170-002 Q21-6167-002K1T Q21-6127-002K1T Q216170002 / Q216167002 / Q216127002