ATP Q21-6170-003 DEF Quality Sensor for Paccar Kenworth Peterbilt

ATP Q21-6170-003 DEF Quality Sensor The ATP Q21-6170-003 DEF Quality Sensor is a direct replacement for OEM Paccar DEF concentration sensors used in Kenworth and Peterbilt trucks. Designed to provide accurate Diesel Exhaust Fluid quality readings, this sensor helps maintain proper SCR system operation and emission compliance. Features Direct replacement for Q21-6170-003 Compatible with many Kenworth and Peterbilt applications Accurate DEF concentration monitoring Plug-and-play installation Heavy-duty construction for commercial truck environments Cross References Q21-6170-003 Q21-6170-003K1T Q21-6167-003K1T Q21-6127-006K1T Applications Kenworth Trucks Peterbilt Trucks PACCAR SCR Emission Systems Please verify part number and compatibility before ordering.