Modern diesel engines require advanced aftertreatment systems to reduce harmful exhaust emissions, and the Freightliner DD13, DD15 One Box (OEM A6804901456) is a crucial part of that strategy. Designed specifically for Freightliner DD13 and DD15 engines, this integrated emissions assembly helps manage exhaust processing, ensuring that pollutants are treated properly before leaving the tailpipe. Choosing a high-quality OEM One Box ensures your emissions system functions as it should, supporting cleaner operation and reliable engine performance.
This One Box assembly plays a key role in emissions management — here’s why it matters:
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Integrated Emissions Functionality – Combines essential aftertreatment components into one assembly, simplifying exhaust processing and streamlining emissions control.
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Helps Reduce Harmful Pollutants – Works within the aftertreatment system to manage nitrogen oxides (NOx), soot, and other exhaust byproducts, contributing to cleaner emissions output.
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Supports Regulatory Compliance – Installing the correct OEM One Box helps ensure your engine continues to meet emissions standards and avoid related fault codes or derate conditions.
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OEM-Grade Fit and Durability – As OEM A6804901456, this assembly matches original specifications for fitment, materials, and reliable performance under heavy-duty use.
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Improves Serviceability – An integrated emissions assembly can make diagnostics and maintenance more straightforward compared to managing separate components.
A worn or failing emissions assembly can lead to reduced emissions efficiency, engine derates, or elevated exhaust temperatures. The Freightliner DD13, DD15 One Box (OEM A6804901456) delivers the OEM-level quality and integration your engine depends on — helping keep your diesel running cleaner, more efficiently, and in compliance with emissions requirements. For customers seeking a trusted replacement part, Tamerx offers high-quality components designed to support long-lasting emissions performance and dependable engine operation.











