4377650 | Genuine Cummins® DEF Doser Injector SCR 2.2 For EPA17 6.7 L ISB/QSB Cab Interior Part Radio Holder Incorrect or Strange Sensor Readings

Incorrect or Strange Sensor Readings

If you monitor ICP sensor data

Signs of a Bad Fuel Filter Housing DDE A4730904452

The DEF tank 4086727C1 stores Diesel Exhaust Fluid

Rattling or Clicking Noises

4377650 | Genuine Cummins® DEF Doser Injector SCR 2.2 For EPA17 6.7 L ISB/QSB Cab Interior Part Radio Holder Incorrect or Strange Sensor ReadingsDescription: A DEF Doser Injector 4377650 (also called a DEF injector or dosing valve) is the component that sprays Diesel Exhaust Fluid (DEF) into the exhaust stream as part of the SCR (Selective Catalytic Reduction) system. Part Number: 4377650 Condition: New Manufacture Brand: Cummins Fits 4377650 For EPA17 6. 7 L ISB QSB Purpose of using 4377650: 1. Reduces harmful NOx emissions Sprays DEF into hot exhaust gases DEF breaks down into ammonia