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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 (13)

Redline Emissions Products Replacement for Detroit / Mercedes One Box Gasket / Clamp Kit ( A0019959702 / REP VB3014 )
$44.25
Redline Emissions Products VB3014 Replacement kit for Detroit A001995970 exhaust clamp and seal kit fits Detroit / Mercedes ONE BOX inlet and outlet flanges. Consists of (1) Redline VB2020 clamp and (1) Redline G03004 gasket. Fits Detroit / Mercedes / Western Star ONEBOX Inlet / Outlet locations.

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...

Redline Emissions Products Weld Bung (BG2015) - M20 X 1.50, 1.18" OD, .472" H, Flat Flare Stepped. Replaces Detroit 23539608
$22.50
Redline Emissions Products OEM Replacement Weld Bung (BG2015) Instead of buying a new DPF you can now simply replace the bung! Crafted out of high quality stainless steel, these bungs allow you to position your sensor where it needs to be, ensuring proper fitment. This weld bung and many other popular bungs are now available in our popular weld...

Redline Emissions Products Weld Bung (BG2019) - M14 X 1.50, 0.88" OD, 0.71" H, Flat Flare Stepped. Replaces DETROIT 23539606
$22.50
Redline Emissions Products OEM Replacement Weld Bung (BG2019) Instead of buying a new DPF you can now simply replace the bung! Crafted out of high quality stainless steel, these bungs allow you to position your sensor where it needs to be, ensuring proper fitment. This Weld Bung and many other popular Bungs are now available in our popular Weld ...

Redline Emissions Products Weld Bung (BG2005) - M16 X 1.50, 0.79" OD, 0.61" H, Flat Flare Stepped. Replaces DETROIT 23539607
$22.50
Redline Emissions Products OEM Replacement Weld Bung (BG2005) Instead of buying a new DPF you can now simply replace the bung! Crafted out of high quality stainless steel, these bungs allow you to position your sensor where it needs to be, ensuring proper fitment. Replaces OEM Detroit 23539607 sensor boss How to replace Detroit Sensor Bosses Dim...

Redline Emissions Products Weld Bung (BG2018) - M12 X 1.25, 0.79" OD, 0.61" H, Flat Flare Stepped. Replaces DETROIT 23539605
$22.50
Redline Emissions Products OEM Replacement Weld Bung (BG2018) Instead of buying a new DPF you can now simply replace the bung! Crafted out of high quality stainless steel, these bungs allow you to position your sensor where it needs to be, ensuring proper fitment. Replaces OEM DETROIT 23539605 sensor boss How to replace Detroit Sensor Boss Dimen...
Tags
- Everything in Freightliner One Box
- Cascadia
- Century
- clamp
- Clamp Kits
- Columbia
- Coronado
- DD13
- DD15
- DD16
- Detroit One Box
- Detroit-Diesel
- Detroit-Mercedes
- EGT
- Flare: Flat
- Flare: Normal
- Freightliner
- gasket
- Heavy Duty
- M12 X 1.25
- M14 X 1.50
- M16 X 1.00
- M16 X 1.50
- M20 X 1.50
- Mercedes-Benz
- NOx
- OEM (ALL)
- OEM Surplus
- Redline Emissions Products
- sensor
- ship-flat10
- Stepped
- SURPLUS