Cummins X15 SCR 2022-2024: OEM 5418546

Engine-Specific NOx Control Module for Cummins X15 Engines (2022–2024)

What is it?
The Cummins X15 SCR (Selective Catalytic Reduction) unit with OEM part number 5418546 is an emissions aftertreatment component designed for Cummins X15 diesel engines built from 2022 through 2024. Functioning as part of the SCR system, this module works with Diesel Exhaust Fluid (DEF) to support a chemical process that converts nitrogen oxides (NOx) in the exhaust into nitrogen and water before the gases exit the system, helping the engine meet emissions requirements.

Why choose this SCR Assembly?
This SCR assembly is engineered to meet Cummins’ original specifications for the X15 platform, ensuring precise fitment and reliable integration with DEF dosing systems, sensors, and the engine’s control modules. When aftertreatment hardware deteriorates or becomes less efficient over time, NOx reduction effectiveness can decline, potentially leading to system alerts or uneven emissions behavior. Installing the correct OEM-specified unit helps maintain consistent NOx control and coordinated exhaust system response.

Key Benefits
✅ Tailored for Cummins X15 aftertreatment systems (2022–2024)
✅ Promotes reliable NOx conversion via DEF chemistry
✅ Helps sustain coordinated operation with related emissions components
✅ Direct-fit replacement — no modifications required
✅ Built to withstand the rigors of heavy-duty exhaust environments

Applications
This SCR module is suitable for medium- and heavy-duty trucks and commercial vehicles equipped with Cummins X15 engines produced between 2022 and 2024. It’s commonly found in long-haul tractors, regional freight rigs, vocational trucks, and other platforms where stable emissions control and regulatory compliance are essential.

Installation Notes
Before beginning service, allow the exhaust and aftertreatment system to fully cool. Remove the existing SCR module and inspect adjacent DEF lines, sensors, and mounting hardware for wear, soot buildup, or damage. Install the replacement SCR unit 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 X15-equipped vehicle is experiencing NOx-related alerts, uneven emissions readings, or inconsistent aftertreatment performance, replacing the SCR assembly with the correct OEM-specified part can help restore coordinated exhaust treatment and dependable system behavior. The Cummins X15 SCR (OEM 5418546) plays a key role in managing regulated exhaust chemistry and supporting reliable vehicle operation across demanding duty cycles.