Cummins B6.7 SCR Outlet Catalyst Module 2018-2024: OEM 5418490

Completing the SCR Treatment Process for Cummins B6.7 Engines (2018–2024)

What is it?
The Cummins B6.7 SCR Outlet Catalyst Module, identified by OEM 5418490, is an aftertreatment component designed to support the final stages of Selective Catalytic Reduction (SCR). Within the SCR process, Diesel Exhaust Fluid (DEF) reacts with exhaust gases to help convert nitrogen oxides (NOx) into nitrogen and water vapor before the treated exhaust exits the system.

Why choose this SCR Outlet Catalyst Module?
The SCR outlet catalyst plays an important role in maintaining effective emissions treatment. OEM 5418490 is designed for compatible Cummins B6.7 applications from 2018 through 2024, helping maintain proper fit and integration with surrounding aftertreatment components.

High exhaust temperatures, contamination, DEF-related deposits, physical damage, and prolonged operating cycles can gradually affect catalyst condition. Engine problems that allow excessive oil, fuel, or soot into the exhaust can also contribute to premature deterioration.

Signs of a compromised SCR catalyst may include emissions-related fault codes, increased NOx readings, warning lights, DEF system concerns, or irregular aftertreatment operation. Using the correct application-matched module helps restore the intended exhaust treatment process.

Key Benefits
✅ Designed for compatible Cummins B6.7 applications (2018–2024)
✅ Supports the final stages of SCR exhaust treatment
✅ Helps reduce nitrogen oxide (NOx) emissions
✅ Supports the conversion of NOx into nitrogen and water vapor
✅ Integrates with compatible DEF and aftertreatment components
✅ Designed for demanding diesel exhaust temperatures and operating conditions

Applications
This SCR Outlet Catalyst Module is intended for compatible Cummins B6.7 diesel engine applications from 2018 through 2024. These engines are commonly used in medium-duty trucks, buses, delivery vehicles, vocational equipment, and other commercial diesel applications equipped with SCR emissions systems. Confirm OEM number 5418490 and engine-specific fitment before installation.

Installation Notes
Allow the exhaust system to cool completely before beginning installation. Inspect the DEF injector, decomposition components, NOx sensors, temperature sensors, exhaust connections, clamps, seals, and surrounding aftertreatment components for contamination, deposits, leaks, or damage. Any underlying engine or DEF system issue that contributed to catalyst deterioration should be corrected before replacement. After installation, inspect for exhaust leaks, clear applicable diagnostic codes, and verify SCR operation with suitable diagnostic equipment.

Final Thoughts
Effective SCR treatment depends on the entire aftertreatment system working together through the final stage of the exhaust path. The Cummins B6.7 SCR Outlet Catalyst Module (OEM 5418490) helps maintain consistent NOx treatment and reliable emissions-system operation for compatible 2018–2024 applications.