4387304 Genuine Cummins DEF Pump For Diesel Emissions System

Description

The 4387304 DEF pump is a genuine Cummins component used in the diesel exhaust fluid delivery system. It supplies DEF at the correct pressure and flow rate to support proper SCR emissions operation.

General Specifications

Product Features

The 4387304 DEF pump is built to match factory performance and installation requirements:

• Moves diesel exhaust fluid from the supply side of the emissions system.
• Provides the pumping action needed to circulate DEF through its designated fluid path.
• Works within the existing emissions-fluid circuit and its connection arrangement.
• Supports controlled DEF delivery as required by the diesel emissions system.
• Keeps fluid movement directed through the intended DEF plumbing.
• Integrates the pumping function into the factory emissions-system layout.

Application Notes

The 4387304 DEF pump is intended for engines equipped with the factory Cummins SCR emissions system. Installation requires proper priming and verification of DEF system operation after replacement.

Always verify part number, engine model, and emissions system configuration before installation.