Cummins B6.7 SCR 2022-2024: OEM 5418550

Effective NOx Reduction for Cummins B6.7 Engines (2022–2024)

What is it?
The Cummins B6.7 SCR (Selective Catalytic Reduction) assembly, identified by OEM part number 5418550, is a designed emissions aftertreatment component for Cummins B6.7 diesel engines manufactured between 2022 and 2024. As part of the SCR system, it works with Diesel Exhaust Fluid (DEF) to support a chemical conversion that transforms nitrogen oxides (NOx) in the exhaust into nitrogen and water before the gases are released, aiding in emissions regulation.

Why choose this SCR Assembly?
This SCR unit is engineered to Cummins’ original standards for the B6.7 engine platform, ensuring proper fitment and reliable interaction with DEF dosing components, emissions sensors, and engine controls. Over time, SCR performance can diminish due to normal wear or contamination, which may lead to reduced NOx conversion efficiency or system warnings. Installing the correct OEM-specified SCR helps maintain stable emissions behavior and coordinated aftertreatment performance.

Key Benefits
✅ Specifically designed for Cummins B6.7 aftertreatment systems (2022–2024)
✅ Helps enable dependable NOx conversion with DEF use
✅ Supports coordinated operation with related emissions parts
✅ Direct-fit replacement — no alterations required
✅ Built for heavy-duty exhaust environments

Applications
This SCR assembly is suited for medium- and heavy-duty trucks and commercial vehicles powered by Cummins B6.7 engines built between 2022 and 2024. It’s commonly applied in delivery fleets, vocational trucks, regional transport rigs, and other commercial platforms where dependable emissions performance and compliance are integral to daily use.

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 SCR assembly using proper seals and fasteners to achieve a secure and leak-free fit. After installation, clear any stored system codes and verify proper system behavior using diagnostic tools.

Final Thoughts
If your Cummins B6.7-equipped vehicle is showing emissions alerts, uneven NOx readings, or unreliable aftertreatment behavior, replacing the SCR component with the correct OEM-specified unit can help restore steadier emissions control. The Cummins B6.7 SCR (OEM 5418550) plays a central role in managing regulated exhaust chemistry and supporting reliable vehicle operation across varied duty cycles.