Cummins ISB 6.7L SCR Outlet Catalyst Module 2013-2021: OEM 61026B

Dependable NOx Reduction for Cummins ISB 6.7L Engines (2013–2021)

What is it?
The Cummins ISB 6.7L SCR Outlet Catalyst Module, identified by OEM 61026B, is a critical component of the Selective Catalytic Reduction (SCR) aftertreatment system. Located toward the outlet section of the exhaust assembly, it works with Diesel Exhaust Fluid (DEF) to convert nitrogen oxide (NOx) emissions into harmless nitrogen and water vapor before the exhaust leaves the vehicle. This process helps the engine meet emissions requirements while supporting efficient operation of the complete aftertreatment system. 

Why choose this SCR Outlet Catalyst Module?
A properly functioning SCR Outlet Catalyst Module is essential for maintaining effective emissions control and dependable aftertreatment operation. The OEM 61026B module is designed specifically for Cummins ISB 6.7L engines manufactured between 2013 and 2021, providing compatibility with factory-installed emissions components.

Over time, exposure to excessive heat, contamination, DEF system issues, and catalyst aging can reduce the module's efficiency. When this occurs, operators may encounter emissions-related warning lights, elevated NOx readings, fault codes, or engine derate conditions. Replacing the worn catalyst module with the correct OEM-matched component helps restore proper exhaust treatment and supports reliable emissions system operation.

Key Benefits
✅ OEM-matched SCR Outlet Catalyst Module for Cummins ISB 6.7L engines (2013–2021)
✅ Helps convert harmful NOx emissions into nitrogen and water vapor
✅ Supports reliable operation of the complete aftertreatment system
✅ Helps maintain consistent exhaust flow and emissions efficiency
✅ Direct-fit design for simplified installation
✅ Built for demanding commercial, industrial, and off-highway applications

Applications
This SCR Outlet Catalyst Module is designed for Cummins ISB 6.7L diesel engines manufactured between 2013 and 2021. It is commonly used in commercial trucks, vocational vehicles, industrial equipment, and specialized applications, including Tigercat equipment, where dependable emissions control is essential for daily operation. 

Installation Notes
Allow the exhaust system to cool completely before beginning installation. Inspect the DEF injector, NOx sensors, temperature sensors, exhaust piping, clamps, and mounting hardware for contamination or damage that could affect the new catalyst module. Install the replacement unit using the correct seals and hardware to ensure proper alignment and a leak-free fit. After installation, verify all sensor connections, clear any stored diagnostic fault codes if required, and confirm proper operation of the aftertreatment system before returning the equipment to service.

Final Thoughts
The SCR Outlet Catalyst Module is a vital component in reducing NOx emissions and maintaining reliable aftertreatment operation. The Cummins ISB 6.7L SCR Outlet Catalyst Module (OEM 61026B) provides dependable fitment, efficient exhaust treatment, and long-lasting durability for 2013–2021 Cummins ISB 6.7L-powered equipment operating in demanding environments.