Cummins ISB 6.7L Doser DEF Pump : OEM 91894B01

Keep DEF Flowing: Cummins ISB 6.7L Doser DEF Pump – OEM 91894B01

What is it?
The Cummins DEF Doser Pump (OEM 91894B01) is a key component in the Selective Catalytic Reduction (SCR) system, responsible for supplying Diesel Exhaust Fluid (DEF) from the tank to the doser injector. This pump ensures consistent and accurate DEF flow to support proper NOx reduction in the exhaust stream.

Why Choose OEM 91894B01?
OEM 91894B01 is designed specifically for the Cummins ISB 6.7L engine platform, delivering factory-grade fit and function. This OEM pump provides reliable pressure and volume control, reducing the risk of flow faults, system errors, or emissions-related shutdowns often linked to non-genuine parts.

Key Benefits
✅ Precision-engineered for Cummins ISB 6.7L engines—no adjustments or compatibility issues.
✅ Delivers consistent DEF flow for accurate injection and proper SCR function.
✅ Built with corrosion- and heat-resistant materials for long-term durability.
✅ Meets Cummins OEM quality standards for emissions system working conditions.
✅ Installs with factory fittings—no rewiring or custom mounting needed.

Applications
This DEF doser pump is used in Cummins ISB 6.7L engines across a variety of vehicles, including commercial trucks, buses, and work vehicles equipped with SCR emissions systems. It plays a vital role in maintaining DEF delivery, allowing the engine to operate within EPA-mandated emissions guidelines.

Installation Notes
Installation should be done with care, especially regarding DEF system cleanliness. Be sure to disconnect the battery and avoid contamination of DEF lines during removal and replacement. Inspect hoses, filters, and connectors during installation, and use Cummins torque specs for securing the unit.

Final Thoughts
The Cummins OEM 91894B01 DEF Doser Pump is a critical part of your engine’s emissions system. With OEM reliability and a direct-fit design, it’s the smart solution for restoring proper DEF flow and ensuring your ISB 6.7L engine stays compliant and running efficiently.