Cummins ISB 6.7L SCR Outlet Catalyst Module 2011-2014: OEM 4354199
Restore Efficient Emissions Control for Cummins ISB 6.7L Engines (2011–2014)
What is it?
The Cummins ISB 6.7L SCR Outlet Catalyst Module, identified by OEM 4354199, is a key component of the Selective Catalytic Reduction (SCR) aftertreatment system. Installed 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 standards while supporting the reliable operation of the complete aftertreatment system.
Why choose this SCR Outlet Catalyst Module?
The SCR Outlet Catalyst Module is essential for maintaining proper exhaust emissions treatment and ensuring the aftertreatment system functions as designed. The OEM 4354199 module is engineered for Cummins ISB 6.7L engines produced between 2011 and 2014, providing compatibility with factory-installed emissions components.
Over time, catalyst aging, DEF contamination, excessive heat, and prolonged exposure to demanding operating conditions can reduce the effectiveness of the SCR system. When this occurs, operators may experience emissions warning lights, elevated NOx readings, fault codes, or engine derate conditions. Replacing the catalyst module with the correct OEM-matched component helps restore efficient exhaust treatment and dependable aftertreatment operation.
Key Benefits
✅ OEM-matched SCR Outlet Catalyst Module for Cummins ISB 6.7L engines (2011–2014)
✅ Helps convert harmful NOx emissions into nitrogen and water vapor
✅ Supports reliable operation of the complete aftertreatment system
✅ Helps maintain consistent exhaust flow throughout the emissions system
✅ Direct-fit design for straightforward installation
✅ Built for demanding commercial, industrial, and vocational applications
Applications
This SCR Outlet Catalyst Module is designed for Cummins ISB 6.7L diesel engines manufactured between 2011 and 2014. These engines are commonly used in medium-duty trucks, commercial fleets, vocational vehicles, industrial equipment, and other applications that rely on advanced aftertreatment systems to maintain dependable emissions control.
Installation Notes
Before installation, allow the exhaust system to cool completely. Inspect the DEF injector, NOx sensors, temperature sensors, exhaust piping, clamps, and mounting hardware for signs of wear, contamination, or damage that could affect the new catalyst module. Install the replacement unit using the appropriate 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 vehicle to service.
Final Thoughts
The SCR Outlet Catalyst Module is a critical part of maintaining efficient exhaust emissions treatment on modern diesel engines. The Cummins ISB 6.7L SCR Outlet Catalyst Module (OEM 4354199) provides dependable fitment, reliable NOx reduction, and long-lasting durability for 2011–2014 Cummins ISB 6.7L-powered equipment operating in demanding environments.