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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 (8)

OEM Detroit / Mercedes One Box NOx Sensor (SUR A0101538128)
$375.00
OEM DETROIT NOX SENSOR A0101538128 FOR ONE BOX AFTERTREATMENT SYSTEMS OEM SURPLUS. Fits specific Detroit-Mercedes aftertreatment systems, this is an outlet sensor. If sold out, see aftermarket replacement REP S11128 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 retai...

New Genuine OEM "Take-off" Detroit / Mercedes NOX Sensor (A0101531928)
$375.00
OEM DETROIT NOX SENSOR A0101531928 FOR ONE BOX 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 Detroit / Mercedes retail packaging. We buy complete units from Detroit / Mercedes and then break them down so that we can sell the pieces individually...

OEM DETROIT PARTICULATE MATTER SENSOR (A0101536028)
$180.00
Surplus OEM Detroit One Box Particulate Matter (PM) Sensor A0101536028. 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 individual...

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...

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...