Cummins B6.7 SCR 2022-2024: OEM 5418484

Engine-Matched NOx Control for Cummins B6.7 Engines (2022–2024)

What is it?
The Cummins B6.7 SCR (Selective Catalytic Reduction) assembly, identified by OEM part number 5418484, is a vital emissions aftertreatment component for Cummins B6.7 diesel engines built between 2022 and 2024. Integrated into the exhaust system, it works with Diesel Exhaust Fluid (DEF) to support a chemical reaction that converts nitrogen oxides (NOx) into nitrogen and water before the gases leave the system, helping the engine stay within emissions requirements.

Why choose this SCR Assembly?
This SCR module is built to Cummins’ original specifications for the B6.7 platform, ensuring proper fitment and reliable interaction with DEF delivery components, emissions sensors, and engine control systems. Over time, SCR components may experience reduced effectiveness due to normal wear or contamination, which can impact NOx conversion and cause emissions warnings or variable aftertreatment behavior. Installing the correct OEM-specified assembly helps maintain coordinated exhaust treatment and steadier emissions system response.

Key Benefits
✅ Designed specifically for Cummins B6.7 emissions systems (2022–2024)
✅ Supports consistent NOx conversion with DEF chemistry
✅ Helps sustain coordinated operation with related aftertreatment components
✅ Direct-fit replacement — no modifications required
✅ Built for heavy-duty exhaust environments and prolonged use

Applications
This SCR assembly is suitable for medium- and heavy-duty trucks and commercial vehicles equipped with Cummins B6.7 engines manufactured between 2022 and 2024. It’s commonly used in delivery fleets, vocational trucks, regional transport rigs, and other commercial platforms where dependable emissions control and regulatory compliance are important to daily operations.

Installation Notes
Before servicing, ensure the exhaust and aftertreatment system has fully cooled. Remove the existing SCR module and inspect nearby DEF lines, sensors, and mounting hardware for signs of wear, soot buildup, or damage. Install the replacement assembly using proper seals and fasteners to ensure a secure, leak-free fit. After installation, clear any stored system codes and verify correct SCR behavior using diagnostic tools.

Final Thoughts
If your Cummins B6.7-equipped vehicle is showing NOx-related alerts, inconsistent emissions readings, or uneven aftertreatment performance, replacing the SCR assembly with the correct OEM-specified part can help restore smoother emissions control and more predictable system behavior. The Cummins B6.7 SCR (OEM 5418484) plays a central role in managing regulated exhaust chemistry and supporting dependable vehicle operation across varied duty cycles.