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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 (22)
OEM Detroit / Mercedes / Western Star DOC & Clamp Kit (EA6804901456 / A6804901456)

OEM Detroit / Mercedes / Western Star DOC & Clamp Kit (EA6804901456 / A6804901456)
$8,250.00
This 2016 and newer OEM Detroit / Mercedes / Western Star DOC & Clamp Kit is brand NEW and has never been installed. This kit includes the DOC / SCR modules and inlet and outlet clamps and gaskets. This kit does not include any sensors, DPF, or other items. This product is not remanufactured, and does not have a core charge. OEM part number...
OEM Detroit One Box / A6804903212

OEM Detroit One Box / A6804903212
$12,000.00
These OEM Detroit / Freightliner One Box assemblies, A6804903212 are brand NEW and have never been installed. Fits various 2016 and newer Freightliner and Western Star configurations. This part includes all temperature, NOx, pressure sensors, electronics, and BOTH DPFs. When purchasing from Freightliner dealers, these do no include the DPFs and...
OEM Detroit One Box / A0014909292

OEM Detroit One Box / A0014909292
$12,000.00
These OEM Detroit Mercedes One Box A0014909292 are brand NEW and have never been installed. Fits various 2016 and newer Freightliner and Western Star configurations. A0014909292 / A6804908756. This part includes all temperature, NOx, pressure sensors, electronics, and BOTH DPFs. When purchasing from Freightliner dealers, these do no include the ...
OEM Detroit One Box / A6804903712

OEM Detroit One Box / A6804903712
$12,000.00
These OEM Detroit Mercedes One Box A6804903712 are brand NEW and have never been installed. Fits various 2016 and newer Freightliner and Western Star configurations. This part includes all temperature, NOx, pressure sensors, electronics, and BOTH DPFs. When purchasing from Freightliner dealers, these do no include the DPFs and must be purchased...
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...

Redline Emissions Products Replacement for Detroit / Mercedes One Box Gasket / Clamp Kit (REP VB3008)
$288.00
Redline Emissions Products VB3008 Replacement kit for Detroit ONE BOX V BAND / GASKET KIT Kit includes: (2) G03001 (2) G03004 (2) VB2007 (Nominal Inside Diameter:10.59") (2) VB2008 (Nominal Inside Diameter:10.5") This kit fits: Detroit DD13-DD15 One Box Assembly

Redline Emissions Products Replacement for Detroit / Mercedes One Box Gasket / Clamp Kit (REP VB3011)
$325.00
Redline Emissions Products VB3011 Replacement kit for Detroit One Box V Band / Gasket Kit Kit includes: (2) VB2007 (Nominal Inside Diameter:10.59") (2) VB2008 (Nominal Inside Diameter:10.5") (2) G03001 (Spiral Wound Gasket) (10) Bolt & Clip sets for the heat shield This Kit fits: Detroit Mercedes DD13 / DD15 DPF (A6804910894 / RED 52976) ...
Redline Emissions Products Replacement for Detroit / Mercedes Gasket / Clamp Kit (REP VB3013)

Redline Emissions Products Replacement for Detroit / Mercedes Gasket / Clamp Kit (REP VB3013)
$188.95
Redline Emissions Products VB3013. For mounting DPF's into Detroit Diesel ONE BOX assembly. Not offered by Freightliner so we made our own kit. Consist of: (2) Redline VB2007 (10.59") clamps (2) Redline G03001 gaskets. This Kit fits: Detroit Mercedes DD13 / DD15 DPF (A6804910894 / RED 52976) and Detroit Diesel DD13 / DD15 / DD16 DPF (A680491...

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.

Redline Emissions Products Replacement Gasket / Clamp kit (REP VB3019)
$168.50
Redline Emissions Products VB3019. Gasket and clamps kit for Detroit / Mercedes Western Star single filter OneBox systems. Freightliner does not offer these so we decided to make our own kit! Consists of the following: (1) VB2042 Clamp (OEM #A0009957033) (1) VB2043 Clamp (OEM #A6809950501, A0039955101) (1) G03007 Gasket (OEM #A0004921680) (5) ...

Redline Emissions Products Replacement Clamp and Gasket Kit for One Box (REP VB3020)
$350.00
Redline Emissions Products VB3020 Replacement Kit for Detroit One Box V Band / Gasket Kit. This kit is designed to make the servicing of your Detroit One Box kit as simple as it can be. In this kit, you will find the gaskets and clamps for both DPFs, as well as the bolt and clips that attach the heat shield to the frame of your One Box. Recently...
OEM Detroit Aftertreatment Wiring Harness (SUR A4721506220)

OEM Detroit Aftertreatment Wiring Harness (SUR A4721506220)
$425.00
OEM DETROIT WIRING HARNESS A4721506220 FOR OEM DETROIT-MERCEDES ONE-BOX APPLICATIONS. OEM SURPLUS FITS 2016 and newer Detroit Diesel Aftertreatment Systems Only! 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 ...
Tags
- Everything in Freightliner One Box
- Cascadia
- Century
- clamp
- Clamp Kits
- clearance
- Columbia
- Coronado
- D16
- DD13
- DD15
- DD16
- Detroit One Box
- Detroit-Diesel
- Detroit-Mercedes
- DOC
- DPF
- Durafit
- EGT
- Freightliner
- gasket
- GESi
- Heavy Duty
- Mercedes-Benz
- OEM DPF/DOC
- OEM Surplus
- One Box
- Redline Emissions Products
- SCR
- sensor
- ship-15-per
- ship-flat10
- ship-flat13
- ship-flat250
- ship-flat50
- ship-flat500
- ship-gesi
- SURPLUS
- Western Star