Cummins X15 SCR 2018-2024: OEM 5418504

Engine-Specific NOx Control Module for Cummins X15 Engines (2018–2024)

What is it?
The Cummins X15 SCR (Selective Catalytic Reduction) unit for model years 2018–2024, carrying OEM part number 5418504, is a core emissions aftertreatment component. Working with Diesel Exhaust Fluid (DEF), this SCR module facilitates a chemical conversion that transforms nitrogen oxides (NOx) in the exhaust into benign nitrogen and water before the gases exit the system, helping the engine operate within emissions standards.

Why choose this SCR Assembly?
This SCR assembly is engineered to meet Cummins’ original equipment specifications for the X15 engine family, ensuring a precise fit and proper interface with onboard sensors and control systems. When an SCR component ages or becomes compromised, its ability to reduce NOx can diminish, potentially triggering system alerts or inconsistent emissions performance. Choosing the correct OEM unit supports dependable emissions management across varied operating conditions.

Key Benefits
✅ Tailored for Cummins X15 emissions systems
✅ Promotes effective reduction of NOx exhaust compounds
✅ Helps support stable aftertreatment system behavior
✅ Direct-fit replacement — no adjustments required
✅ Built to withstand high exhaust temperatures and service demands

Applications
This SCR unit is ideal for heavy-duty trucks and commercial vehicles powered by Cummins X15 engines built between 2018 and 2024. It’s commonly deployed in long-haul transport, regional freight operations, vocational work, and other applications where robust emissions control and regulatory compliance are essential.

Installation Notes
Before servicing, ensure the exhaust and aftertreatment system has fully cooled. Remove the existing SCR module and inspect adjacent sensors, DEF lines, and brackets for wear, contamination, or damage. Install the replacement SCR unit using proper seals and hardware to achieve a secure, leak-free fit. After installation, clear any stored fault codes and validate proper system function with suitable diagnostic tools.

Final Thoughts
If your Cummins X15-equipped vehicle is experiencing NOx-related alerts, disparate emissions readings, or reduced aftertreatment performance, installing the correct OEM SCR assembly can help restore coordinated emissions control. The Cummins X15 SCR (OEM 5418504) performs a crucial role in maintaining regulated exhaust chemistry and supporting reliable engine operation.