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We’ve expanded our stock of genuine, new OEM One Box units for Freightliner, Detroit, Mercedes, and Western Star trucks. These are direct from the manufacturer so we can pass on big savings to you – better than most dealer pricing – in fact.
Need a One Box? We’ve got you covered. Whether you need a complete One Box assembly or individual components like DOCs, SCR units, DPFs, sensors, or filters, we have what you need.
Browse our current inventory of One Box units & related parts:
- DOC & Clamp Kits: Bare DOC & SCR unit.
- Complete One Box Assemblies: Includes DPFs, sensors, & electronics.
- Individual Components: Sensors, filters, & electronics.
Not sure which One Box is right for you? We’re happy to help. If you can provide the part number from your old One Box, it will help us quickly identify the correct replacement. Call us today! We’re here to assist you.
Freightliner One Box (2)
OEM CASCADIA / DETROIT One Box (A6804902512)

OEM CASCADIA / DETROIT One Box (A6804902512)
$8,999.00
These OEM Detroit / Mercedes ONE-BOX / A6804902512 are brand NEW and have never been installed. Includes all temperature, NOx, and pressure sensors. Fits Detroit / Mercedes. A6804902512 / A0104902012 / DBZA0104902012 Please confirm mounting configuration before ordering. These are a NON RETURNABLE item so please check a...
OEM Detroit DD5/ Mercedes A0084904712 One Box

OEM Detroit DD5/ Mercedes A0084904712 One Box
$6,500.00
Brand new, never installed OEM Surplus Detroit / Mercedes "ONEBOX" A0084904712. DETROIT DD5 AFTERTREATMENT ASSEMBLY. Replaced by EA0104908112, A9040908137 STAMPED NUMBER A0084907812 (TAG) / STICKER NUMBER A0084904712 Please confirm the mounting configuration before ordering. These are Non-Returnable items once purchased.