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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 (21)

New "Take-off" Detroit / Mercedes Aftertreatment Control Module / A0004469754
$475.00
OEM Detroit-Mercedes Aftertreatment Control Module (ACM) for One Box applications. Part #: A0004469754 - for 2016 and newer applications. No core charge required. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in retail Detroit / Mercedes packaging. We buy complete uni...

New OEM "Take-off" Detroit-Mercedes Aftertreatment Control Module / ACM (A0004465954)
$475.00
New surplus OEM Detroit-Mercedes Aftertreatment Control Module (ACM) for One Box applications. A0004465954 This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in Cummins retail packaging. We buy complete units from Cummins and then break them down so that we can sell the piec...
OEM Detroit One Box Pressure Tube (A6804913737)

OEM Detroit One Box Pressure Tube (A6804913737)
$38.00
OEM Detroit One Box Pressure Tube for Aftertreatment Systems. SUR A6804913737 These are brand new take-off parts from an unused complete assembly. For the replacement weld bung see BG2017. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in retail Detroit / Mercedes packag...

OEM Detroit / Freightliner One Box Pressure Sensor (SUR A4721530928)
$95.00
OEM Detroit / Freightliner One Box Pressure Sensor Part #: A4721530928 Fits 2016 and newer Detroit / Freightliner One Box Assemblies. (SUR A4721530928) This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in retail Detroit / Mercedes packaging. We buy complete units from Detr...

OEM Detroit / Freightliner Exhaust Gas Temperature (EGT) sensor (A6805402117)
$40.00
OEM Detroit / Freightliner / Western Star Exhaust Gas Temperature Sensor (EGT) A6805402117 for OneBox assemblies. Fits 2016 and newer OneBox Aftertreatment systems. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in retail Detroit / Mercedes packaging. We buy complete un...

OEM Detroit / Freightliner Exhaust Gas Temperature (EGT) sensor (A6805401317)
$60.00
OEM Detroit / Freightliner / Western Star Exhaust Gas Temperature (EGT) Sensor A6805401317 for OneBox assemblies. Fits 2016 and newer OneBox Aftertreatment systems. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in retail Detroit / Mercedes packaging. We buy complete ...

OEM Detroit / Freightliner Exhaust Gas Temperature (EGT) sensor (A6805401917)
$75.00
OEM Detroit / Freightliner / Western Star Exhaust Gas Temperature Sensor (EGT) A6805401917 for OneBox assemblies. Fits 2016 and newer OneBox Aftertreatment systems. This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in retail Detroit / Mercedes packaging. We buy complete u...
Freightliner One Box DPF, Reman, OEM ( RA0004903692 / A6804910494 )

Freightliner One Box DPF, Reman, OEM ( RA0004903692 / A6804910494 )
$850.00
This OEM Detroit / Mercedes RA0004903692 DPF is a new Remanufactured filter. There is no core charges for this product. Comes with (1) 2-bolt Clamp, VB2007 and (1) G03001 gasket Replaces the following numbers: A0004903692, A6804910494 Other Aftermarket filters: GESI-0052, Skyline DJ1005-C, REP 52977 DPF size: 13-3/16" X 7.50" Can not be sold or...

OEM DETROIT Particulate Matter Sensor (A0111531328)
$250.00
Surplus OEM Detroit One Box Particulate Matter (PM) Sensor A0111531328 This is not an aftermarket part, it is OEM. These units are OEM "take-offs", they are brand new and unused but do not come in retail Detroit / Mercedes packaging. We buy complete units from Detroit / Mercedes and then break them down so that we can sell the pieces individuall...
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