5510436 | Genuine OEM Cummins DEF Doser Pump for ISX QSX

5510436 is a Genuine OEM Cummins DEF Doser Pump designed for the diesel exhaust fluid system on compatible ISX and QSX engines. The pump supplies DEF within the SCR emissions system to support proper fluid delivery. Specific vehicle and engine compatibility should be verified by Part Number and VIN.

PRODUCT INFORMATION

Part Number: 5510436
Brand: Cummins
Condition: Genuine OEM
Component: DEF Doser Pump
Fuel Type: Diesel
Engine Applications: ISX and QSX; verify by Part Number and VIN
Other important specifications: Diesel Exhaust Fluid (DEF) dosing system component; SCR emissions system

APPLICATIONS

The 5510436 DEF Doser Pump is intended for compatible Cummins ISX and QSX diesel engine DEF dosing and SCR emissions systems. Exact vehicle, engine, and configuration compatibility should be verified using the original part number and VIN before purchase.

FUNCTION

The DEF Doser Pump supplies diesel exhaust fluid to the dosing system as required by the SCR emissions system. Proper DEF delivery supports the intended operation of the emissions control system.

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

• DEF delivery problems
• DEF system fault codes
• SCR system warning messages
• Reduced engine performance
• Improper DEF dosing
• Emissions system faults

WHY REPLACE A DEF DOSER PUMP?

A faulty DEF Doser Pump can interfere with proper DEF delivery and SCR system operation. Replacing a defective 5510436 DEF Doser Pump with the correct Genuine OEM Cummins component can help restore proper DEF dosing and system operation.

FITMENT INFORMATION

Before purchasing, verify the Part Number, VIN, vehicle model, engine, and configuration to confirm compatibility. DEF dosing components can vary between engine and application configurations, so do not rely on appearance alone.

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: 5510436