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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 (35)

Durafit replacement DPF for Detroit Diesel DD13 / DD15 (A0014903592 / C17-0076)
$1,107.00
Durafit OEM DPF Replacement for Detroit Diesel DD13 / DD15 (C17-0076) includes gaskets Replaces OEM Part Numbers: A0014903592 / A6804913594 / A6804910894 / A6804913494 / A0014903492 / A0004903792 Redline Part Number: RED 52976 Note: This product cannot be sold or shipped to CA at the present time.

Redline Emissions Products Replacement Clamp for Detroit (A0009957033 / VB2042)
$54.85
Redline Emissions Products replacement for Detroit A0009957033 OEM 12.5" V-clamp VB2042. This clamp is an exact-fit replacement for the more expensive OEM one. Fits Detroit Single DPF versions of the "OneBox" Replaces OEM: A0009957033, A0009956733 Also available in kit REP VB3019

Redline Emissions Products Replacement Clamp for Detroit (A6809950501 / VB2043)
$112.95
Redline Emissions Products replacement for Detroit A0009957033 OEM 13.6" V-clamp VB2043. This clamp is an exact-fit replacement for the more expensive OEM one. Fits Detroit Single DPF versions of the "OneBox" Replaces OEM: A6809950501, A0039955101 Also available in kit REP VB3019

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...

Redline Emissions Products Weld Bung (OEM 23539604 / BG2017) - M16 X 1.00, 0.98" OD, 0.71" H, Normal Flare Stepped
$22.50
Redline Emissions Products OEM Replacement Weld Bung (BG2017) 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 23539604 sensor boss How to replace Detroit Sensor Boss Dimen...

Skyline OEM replacement DPF for DD13 / DD15 Detroit Diesel (A0024908392 / DQ0919-C)
$1,985.00
Skyline OEM DPF Replacement for Detroit Diesel Series DD13, Detroit Diesel DD15 (DQ0919-C) Each Skyline DPF / DOC is specifically designed as a direct replacement for the OEM filter. Our Exact-Fit™ approach makes installation fast and easy without cutting or welding to get you back on the road. Skyline Emissions filters are designed and manufact...

DPFXFIT OEM Replacement DPF for Detroit (A0024908392 / GESI-0097)
$1,962.00
This new aftermarket DPF is a direct replacement for the OEM unit. GESi filters are made of stainless steel housings and use new substrates, this ensures you get a product built to last. These filters also include necessary clamps and gaskets, and there is no core charge which means you can buy and install without worrying about getting compatib...
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...

Durafit Replacement DPF for Detroit Diesel (A6804914194 / C17-0096)
$1,127.00
DuraFit™ Replacement Diesel Particulate Filter (DPF) for Detroit Diesel DD13 / DD15 Engines. **Gaskets included!** Replaces OEM Numbers: A6804914194, EA6804914194, RA6804914194 DuraFit DPFs and DOCs are so durable they come with a nationwide 3-year, unlimited mileage warranty. Made in the USA! Cannot be sold or shipped to California at this t...
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- Everything in Freightliner One Box
- Cascadia
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- clamp
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- D16
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- Detroit-Diesel
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- DOC
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- Durafit
- EGT
- Flare: Flat
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- Freightliner
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- M12 X 1.25
- M14 X 1.50
- M16 X 1.00
- M16 X 1.50
- Mercedes-Benz
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