Cummins X15 SCR 2022-2024: OEM 5418537

Engine-Specific NOx Reduction Catalyst for Cummins X15 Engines (2018–2024)

What is it?
The Cummins X15 SCR (Selective Catalytic Reduction) assembly with OEM part number 5418537 is a precision emissions aftertreatment component for Cummins X15 diesel engines produced between 2018 and 2024. It is part of the SCR system that works with Diesel Exhaust Fluid (DEF) to convert harmful nitrogen oxides (NOx) in the exhaust into nitrogen and water before gases exit the system, helping maintain regulated exhaust quality and emissions compliance.

Why choose this SCR Assembly?
This SCR module is built to match Cummins’ original design specifications for the X15 platform, ensuring correct physical fitment and dependable integration with DEF dosing equipment, sensors, and engine control systems. As aftertreatment parts age or become less effective, NOx conversion efficiency can decrease, potentially leading to system alerts or uneven emissions behaviour. Choosing the correct OEM-specified unit helps sustain steady NOx management and coordinated exhaust treatment.

Key Benefits
✅ Designed specifically for Cummins X15 aftertreatment configurations (2018–2024)
✅ Promotes consistent NOx conversion through DEF interaction
✅ Helps maintain coordinated operation with related emissions components
✅ Direct-fit replacement — no modifications required
✅ Built to withstand heavy-duty exhaust environments and prolonged service

Applications
This SCR assembly is ideal for heavy-duty trucks and commercial vehicles equipped with Cummins X15 engines produced between 2018 and 2024. It fits long-haul tractors, regional transport rigs, vocational vehicles, and other work platforms where stable emissions control and meeting regulatory requirements are essential.

Installation Notes
Ensure the exhaust and aftertreatment system has fully cooled before beginning service. Remove the existing SCR module and inspect the adjacent DEF lines, sensors, and mounting hardware for signs of contamination or wear. Install the replacement SCR assembly with correct seals and fasteners to secure a tight, leak-free fit. After installation, clear any stored fault codes and verify correct aftertreatment system operation using appropriate diagnostic procedures.

Final Thoughts
If your Cummins X15-equipped vehicle is experiencing emissions warnings, fluctuating NOx readings, or inconsistent aftertreatment behaviour, replacing the SCR assembly with the correct OEM-specified unit can help restore coordinated exhaust treatment. The Cummins X15 SCR (OEM 5418537) plays a central role in managing exhaust chemistry and supporting dependable operation across demanding duty cycles.