4387305 | Genuine OEM Cummins DEF Dosing Unit Pump 24V

The 4387305 Genuine OEM Cummins DEF Dosing Unit Pump is designed for the diesel exhaust fluid (DEF) dosing system. This 24-volt dosing unit helps deliver DEF to the exhaust aftertreatment system for proper dosing operation.

PRODUCT INFORMATION

Part Number: 4387305
Brand: Cummins
Condition: Genuine OEM
Component: DEF Dosing Unit Pump
Fuel Type: Diesel
Engine Applications: Not specified
Other important specifications: 24 Volt; DEF dosing system

APPLICATIONS

The 4387305 DEF Dosing Unit Pump is used as a component of a diesel engine DEF aftertreatment system. Specific vehicle, engine, and application compatibility should be verified using the original part number and vehicle information.

FUNCTION

The 4387305 DEF Dosing Unit Pump supplies and manages diesel exhaust fluid within the DEF dosing system. Proper operation of the dosing unit is important for delivering DEF as required by the exhaust aftertreatment system.

A worn, damaged, or failing DEF Dosing Unit Pump may cause symptoms such as:

• DEF dosing system malfunction
• Reduced or interrupted DEF delivery
• Aftertreatment system warnings
• Check engine or emissions-related warning lights
• Improper DEF system operation
• Reduced aftertreatment system performance

WHY REPLACE A DEF DOSING UNIT PUMP?

A faulty DEF Dosing Unit Pump can interfere with proper DEF delivery and aftertreatment system operation. Replacing a damaged or failing unit with a Genuine OEM Cummins component helps restore the intended operation of the DEF dosing system and provides the correct 24-volt component specified by the part number.

FITMENT INFORMATION

Before purchasing, verify the Part Number, VIN, vehicle model, engine, and configuration to confirm compatibility. Do not assume fitment based only on appearance or general application information.

If you are unsure whether this part is correct for your vehicle, please contact us with your VIN and original part number. We are happy to help verify compatibility before purchase.

GENUINE CUMMINS PART

Part Number: 4387305