Keep Your Aftertreatment System Flowing with Cummins X15 Decomposition Reactor Tube 2018–2024 OEM 5418122
What is it?
The Cummins X15 Decomposition Reactor Tube (OEM 5418122) is a critical part of the aftertreatment system, designed to channel DEF-infused exhaust gases during the reduction process. This tube helps ensure proper mixing, efficient chemical reaction, and reliable emissions control for X15 engines built from 2018 to 2024.
Why choose this reactor tube?
Engineered specifically for the 2018–2024 Cummins X15, this component ensures precise fitment and dependable operation. A worn, cracked, or restricted reactor tube can lead to poor DEF atomization, frequent NOx faults, and reduced emissions efficiency. Replacing it with an OEM-quality tube restores proper flow and system balance.
Key Benefits
✅ Ensures proper DEF and exhaust gas mixing for accurate emissions reduction
✅ Helps maintain stable SCR performance and reduce NOx-related fault codes
✅ Built to handle extreme heat and continuous duty cycles
✅ Direct-fit design for quick, trouble-free installation
✅ Meets OEM durability and quality standards
Applications
Ideal for heavy-duty trucks powered by the Cummins X15 engine (2018–2024), especially in fleets and vocational environments where steady emissions performance and system reliability are essential.
Installation Notes
Before installation, inspect the SCR pathway for crystallization or buildup and clean as needed. Use new gaskets and clamps to ensure a secure seal. After fitting, run diagnostics to confirm proper exhaust flow and SCR function.
Final Thoughts
If your X15 is experiencing DEF dosing issues, NOx efficiency faults, or irregular SCR performance, the OEM 5418122 Decomposition Reactor Tube offers the right fix. With a perfect fit and durable construction, it restores proper flow and keeps your emissions system performing at its best.