Cummins ISX15 SCR Outlet Catalyst Module 2013-2017: OEM 4353085

Maintain Reliable Emissions Performance with a Cummins ISX15 SCR Outlet Catalyst Module

What is it?
The Cummins ISX15 SCR Outlet Catalyst Module, identified by OEM 4353085, is an emissions aftertreatment component designed for Cummins ISX15 diesel engines produced between 2013 and 2017. Installed within the Selective Catalytic Reduction (SCR) system, the outlet catalyst module works with Diesel Exhaust Fluid (DEF) to convert harmful nitrogen oxide (NOx) emissions into harmless nitrogen and water vapor before exhaust gases exit the vehicle. It is a critical component in maintaining efficient aftertreatment performance and emissions compliance. 

Why choose this SCR Outlet Catalyst Module?
A properly functioning SCR outlet catalyst module is essential for dependable NOx reduction and efficient exhaust treatment. This module is manufactured to match Cummins ISX15 specifications, ensuring compatibility with factory-installed DEF dosing components, NOx sensors, and exhaust assemblies. Over time, catalyst contamination, thermal cycling, DEF deposits, and prolonged exposure to high exhaust temperatures can reduce SCR efficiency, potentially causing emissions-related fault codes, reduced aftertreatment performance, or engine derate conditions. Replacing the module with the correct OEM-matched component helps maintain reliable emissions control and consistent SCR operation. 

Key Benefits
✅ Designed for Cummins ISX15 engines (2013–2017)
✅ Supports efficient NOx reduction within the SCR system
✅ Helps maintain emissions compliance and aftertreatment performance
✅ Direct-fit replacement for accurate installation
✅ Built for durability in demanding heavy-duty diesel applications

Applications
This SCR Outlet Catalyst Module is used on heavy-duty trucks, vocational vehicles, commercial fleet equipment, and industrial applications equipped with Cummins ISX15 engines from 2013 through 2017. These applications rely on dependable aftertreatment performance to support emissions compliance while delivering reliable operation in demanding commercial environments. 

Installation Notes
Before installation, allow the exhaust and aftertreatment system to cool completely. Inspect the DEF doser, NOx sensors, exhaust piping, clamps, seals, and mounting hardware for contamination, leaks, or damage. Install the replacement SCR outlet catalyst module according to manufacturer specifications, ensuring proper alignment and secure exhaust connections. After installation, verify SCR system operation, perform any required diagnostic procedures, and clear stored fault codes using approved service equipment. 

Final Thoughts
If your Cummins ISX15-powered vehicle is experiencing SCR efficiency issues, emissions-related warning lights, or NOx system fault codes, replacing the SCR Outlet Catalyst Module with the correct OEM component can help maintain dependable aftertreatment performance. The Cummins ISX15 SCR Outlet Catalyst Module (OEM 4353085) plays an important role in supporting efficient emissions control, reliable DEF system operation, and long-lasting diesel engine performance.