DEF Pump Exhaust Doser Pump Diesel Fits For Detroit DD15 RA0001407278 0001407278

DEF Pump Exhaust Doser Pump for Detroit DD15

This DEF pump, referenced as RA0001407278 and 0001407278, moves diesel exhaust fluid to the doser injector on Detroit DD15 engines so the aftertreatment system can control emissions.

Overview

This DEF pump is a replacement exhaust doser pump for the Detroit DD15 engine family. It supplies urea solution at the correct pressure to the dosing injector in the SCR system. A practical fix for drivers dealing with a failed pump and the derate that follows.

Built For Performance

• Pump body matched to the RA0001407278 and 0001407278 references
• Delivers DEF at the pressure the doser injector requires
• Sealed fluid path resists urea crystallization
• Mounting points matched to the original pump location

Fits These Machines

• for Detroit DD15 diesel engines

On-The-Job Use

• Highway trucks running long-haul routes
• Fleets clearing SCR system fault codes
• Service shops repairing aftertreatment failures
• Vehicles recovering from DEF-related derate events

Specs At A Glance

Good To Know

Q: Will this pump clear an active SCR fault? A: Replacing a failed DEF pump addresses the hardware fault, but codes may need to be cleared with a scan tool. Have the system checked if faults return.

Q: Can I run the truck without fixing the pump? A: DD15 aftertreatment systems typically derate power when DEF dosing fails. Repairing the pump restores normal operation and fuel economy.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.