Cummins X15 SCR 2022-2024: OEM 5418543

Emissions-Ready NOx Catalyst for Cummins X15 Engines (2022–2024)

What is it?
The Cummins X15 SCR (Selective Catalytic Reduction) assembly, identified by OEM part number 5418543, is a critical emissions aftertreatment component designed for Cummins X15 diesel engines produced from 2022 through 2024. Operating alongside Diesel Exhaust Fluid (DEF), this unit enables a chemical process that transforms nitrogen oxides (NOx) in the exhaust into nitrogen and water before the gases exit the system, supporting regulated emissions control.

Why choose this SCR Assembly?
This SCR module is engineered to meet Cummins’ original specifications for the X15 platform, ensuring accurate fitment and proper integration with DEF dosing hardware, exhaust sensors, and the engine’s control systems. As components age, SCR performance can wane and NOx reduction efficiency may decline, potentially resulting in alerts or fluctuating aftertreatment behavior. Installing the correct OEM-specified SCR helps support smoother emissions handling and coordinated system response.

Key Benefits
✅ Designed specifically for Cummins X15 emissions systems (2022–2024)
✅ Helps sustain consistent NOx reduction with DEF chemistry
✅ Promotes coordinated function with aftertreatment sensors and controls
✅ Direct-fit replacement — no modifications required
✅ Built for demanding exhaust conditions and extended duty cycles

Applications
This SCR assembly is suitable for heavy-duty trucks and commercial vehicles powered by Cummins X15 engines manufactured between 2022 and 2024. It’s commonly used in long-haul tractors, regional freight rigs, vocational trucks, and other platforms where emissions performance and compliance are part of daily operation.

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

Final Thoughts
If your Cummins X15-equipped vehicle is showing NOx-related alerts, uneven emissions readings, or inconsistent aftertreatment behavior, replacing the SCR assembly with the correct OEM-specified part can help restore coordinated exhaust treatment. The Cummins X15 SCR (OEM 5418543) plays an important role in managing regulated exhaust chemistry and supporting dependable vehicle operation across demanding duty cycles.