2888174NX Genuine OEM Cummins DEF Doser Injector is a diesel exhaust fluid injector used in SCR aftertreatment systems. It precisely meters DEF into the exhaust stream to support proper emissions-system operation and NOx reduction. The part is associated with 6.7L Cummins diesel applications and should be verified against the original part number and vehicle configuration before purchase.

PRODUCT INFORMATION

Part Number: 2888174NX
Brand: Cummins
Condition: Genuine OEM
Component: DEF Doser Injector
Fuel Type: Diesel
Engine Applications: 6.7L Cummins diesel applications
Other important specifications: Designed for SCR aftertreatment systems; associated with 12–24V DEF injector applications.

APPLICATIONS

The 2888174NX DEF Doser Injector is associated with 6.7L Cummins diesel applications equipped with SCR aftertreatment systems. Confirmed vehicle applications include certain 2011–2012 Ram 3500, Ram 4500, and Ram 5500 models with 6.7L diesel engines. Application details can vary by vehicle and configuration, so verify the part number before installation.

FUNCTION

The DEF doser injector meters and introduces Diesel Exhaust Fluid into the exhaust stream as part of the SCR emissions system. Proper DEF dosing supports the SCR system's NOx reduction process and normal aftertreatment operation.

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

• DEF dosing or injection problems
• DEF crystallization around the injection system
• SCR system blockage or restricted operation
• Emissions-related fault codes
• Reduced efficiency of the emissions aftertreatment system
• Improper DEF delivery into the exhaust stream

WHY REPLACE A DEF DOSER INJECTOR?

A faulty DEF Doser Injector can interfere with accurate DEF delivery and proper SCR aftertreatment operation. Replacing a damaged injector with the correct component helps restore proper DEF dosing and supports normal operation of the emissions system.

FITMENT INFORMATION

Please verify the Part Number, VIN, vehicle model, engine, model year, and configuration before purchase. The 2888174NX is associated with specific 6.7L Cummins diesel and SCR applications, and compatibility should be confirmed using the original part number and vehicle specifications.

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: 2888174NX