Cummins ISB 6.7L DEF Doser Injector 2013-2021: OEM 61030B

Keep Emissions in Check: Cummins ISB 6.7L DEF Doser Injector – OEM 61030B

What is it?
The Cummins DEF Doser Injector (OEM 61030B) is an essential emissions system component designed to inject Diesel Exhaust Fluid (DEF) into the exhaust stream. This precise injection helps trigger the Selective Catalytic Reduction (SCR) process, which significantly reduces nitrogen oxide (NOx) emissions from your diesel engine.

Why Choose OEM 61030B?
OEM 61030B is built specifically for Cummins ISB 6.7L engines from 2013 to 2021. With factory-calibrated accuracy and durable construction, it ensures proper DEF delivery and reliable integration with the SCR system—avoiding issues like dosing errors, warning lights, and any interruptions.

Key Benefits
✅ Designed for Cummins ISB 6.7L engines from 2013–2021—no retrofitting required.
✅ Provides precise DEF injection to support efficient NOx conversion.
✅ Engineered to resist thermal stress and corrosive exhaust conditions.
✅ Meets OEM quality and working condition standards for long service life.
✅ Plug-and-play installation using factory connectors and mounts.

Applications
This DEF doser injector is used in a wide range of Cummins ISB 6.7L-powered vehicles, including medium-duty trucks, buses, RVs, and vocational service vehicles. It supports the vehicle’s emissions system by helping reduce environmental impact while ensuring compliance with federal emissions standards.

Installation Notes
Installation should only be done once the exhaust system has fully cooled. Disconnect the battery, remove the old injector, and install the new unit using the factory mounting points and connections. Always inspect DEF lines for leaks or blockages and replace gaskets or seals if needed.

Final Thoughts
The Cummins OEM 61030B DEF Doser Injector is a reliable, direct-fit solution for maintaining effective emissions control on ISB 6.7L engines from 2013 to 2021. It’s a critical part of your SCR system—and using the OEM replacement ensures continued compliance and smooth operation.