PACCAR SENSOR-DEF QUALITY Top Seller leak-proof seal at the lower

leak-proof seal at the lower unit pump

ensuring the engine maintains proper prime for reliable starting and consistent fuel system performance

Prevents exhaust and fluid leaks in the aftertreatment system

this filter supports extended engine life

PACCAR SENSOR-DEF QUALITY Top Seller leak-proof seal at the lowerThe PACCAR Q21 6170 001K1T DEF Sensor is a genuine OEM component designed to monitor the level, temperature, and quality of diesel exhaust fluid in emissions control systems. Built to meet strict PACCAR standards, this sensor ensures accurate DEF system performance, supporting compliance with EPA emissions regulations and maintaining optimal engine operation. Key Features Monitors DEF level, temperature, and quality in real time OEM grade sensor for