Modern diesel engines rely on sophisticated aftertreatment systems to reduce harmful exhaust emissions, and the Freightliner DD13, DD15 One Box (2010–2018, OEM EA6804905556) is an integrated solution that helps manage multiple emissions functions in a single assembly. Designed for Freightliner DD13 and DD15 engines, this One Box combines key components of the emissions system to streamline exhaust treatment, improve performance, and support compliance with emissions standards. Choosing a high-quality OEM One Box ensures your emissions controls work as designed, helping maintain engine efficiency and dependability.
This One Box assembly plays an important role in emissions management — here’s why it matters:
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Integrated Emissions Function – Combines essential aftertreatment components into one assembly, improving airflow control and exhaust processing.
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Reduces Harmful Pollutants – Supports the reduction of nitrogen oxides (NOx), soot, and other exhaust byproducts, helping produce cleaner emissions.
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Supports Emissions Compliance – Using the correct OEM One Box helps ensure your engine meets regulatory standards without triggering warning codes or derate conditions.
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OEM-Grade Fit and Durability – As OEM EA6804905556, this assembly is built to match original specifications for fit, materials, and reliable operation under heavy-duty conditions.
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Simplifies Maintenance – Replacing separate emissions components with one integrated assembly can reduce diagnostic complexity and improve system serviceability.
A failing or worn One Box assembly can lead to reduced emissions efficiency, increased exhaust issues, or system faults that affect engine performance. The Freightliner DD13, DD15 One Box (OEM EA6804905556) delivers the OEM-standard quality and integrated emissions control you need to keep your engine running cleanly and efficiently. For customers seeking a trusted replacement part, Tamerx offers high-quality components designed to help maintain long-lasting emissions performance and dependable engine operation.











