Product Overview
Cummins 4394820 A055N107 Diesel Oxidation Catalyst DOC
Interchange References: 4394820, 4394820NX, 4394820RX, A055N107, BJ0301, BJ0301-M, BJ0301-C, C0351-ID, 58206, GESi-578, 2871453, 2866337, 2871863, 2880483
Restore exhaust aftertreatment performance with this premium aftermarket Cummins Diesel Oxidation Catalyst DOC. This brand-new Skyline DOC inlet catalyst module is a direct-fit replacement for Cummins 4394820, 4394820NX, 4394820RX, and A055N107, with additional compatible Skyline, Roadwarrior, Dinex, and Global Emission Systems cross-reference numbers listed in the table below. Designed for select Cummins ISB 6.7L, QSB 6.7L, and B6.7 medium-duty diesel aftertreatment applications, this DOC installs without exhaust system modifications, carries no core charge, is backed by a 3-year unlimited mileage warranty, is EPA compliant, and ships free within the continental United States.
Cummins 4394820 A055N107 DOC Cross Reference Table
How to Verify Your Unit: Use the table below to compare the original stamped OEM part number on your DOC canister, emissions tag, or catalyst housing with compatible OEM and aftermarket interchange numbers.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| Cummins OEM | 4394820, 4394820NX, 4394820RX, A055N107 |
| Skyline | BJ0301, BJ0301-M, BJ0301-C |
| Roadwarrior | C0351-ID |
| Dinex | 58206 |
| Global Emission Systems | GESi-578 |
Cummins ISB 6.7 QSB 6.7 B6.7 DOC Fitment Guide
This Cummins DOC inlet catalyst module is designed for select medium-duty, school bus, commercial bus, vocational, distribution, delivery, and fleet applications equipped with compatible Cummins ISB 6.7L, QSB 6.7L, or B6.7 exhaust aftertreatment systems.
- Engine Platforms: Select Cummins ISB 6.7L, QSB 6.7L, and Cummins B6.7 diesel applications.
- Approximate Emissions Era: Commonly associated with select EPA17 / 2017 and newer applications, depending on vehicle configuration.
- Common Vehicle Applications: Select Freightliner M2 106 / Business Class M2, International Navistar Durastar / MV Series, Ford F-650 / F-750, Blue Bird, Thomas Built, IC Bus, and related compatible school bus and commercial bus chassis.
- Compatible OEM Numbers: 4394820, 4394820NX, 4394820RX, and A055N107.
Compatible OEM Assembly Numbers: 4394529, 4394560, 4394721, 4394918, 5505699, 5506351, 5506399, 5506505, 5506508, 5506509, 5506513, 5506537, 5506546, 5506547, 5506550, 5506551, 5506779, 5506795, 5507265, 5508152, 5508295, 5508296, 5508297, 5508298, 5508304, 5508305, 5508312, 5508504, 5508509, 5508699, 5508701, 5508702, 5508808, 5508851, A054M324, A054Z438, A055A974, A055B039, A060H787, A060H788, A060H790, A060H791, A060J096, A060J097, A060J098, A060J099, A060J117, A060S036, A060S283, A060S290, A060T082, A060T095, A060T368, A062R447, A062R448, A062R453, A062R465, A062R469, A062R473, A062R485, A062R495, A062R500, A062R509, A062R514, A062R548, A062R561, A062R581, A062R617
Choose Your Kit Configuration
Select the setup from the product options above that best fits your shop's needs:
- Full Kit (Best Value): Includes one (1) brand-new DOC unit, one (1) 2871453 gasket, one (1) 2866337 gasket, one (1) 2871863 clamp, and one (1) 2880483 clamp.
- DOC Only: Includes one (1) DOC only. Installation gaskets and clamps are not included.
DOC Technical Specifications
| Measurement Parameter | Specification Value |
|---|---|
| Product Type | Diesel Oxidation Catalyst (DOC) Inlet Catalyst Module |
| Common Search Term | DOC Filter |
| Primary OEM Part Numbers | 4394820, A055N107 |
| Additional OEM Numbers | 4394820NX, 4394820RX |
| Manufacturer Part Number | Skyline BJ0301 |
| Engine Compatibility | Cummins ISB 6.7L, QSB 6.7L, and B6.7 |
| Core Condition | Brand-New Aftermarket Unit |
| Core Charge | No Core Charge |
| Warranty | 3-Year Unlimited Mileage Warranty |
| Emission Standard | EPA Compliant / EPA17 |
Key Features
- Direct-Fit Cummins DOC: Replaces Cummins diesel oxidation catalyst applications listed in the cross-reference table above.
- No Core Charge: Brand-new aftermarket DOC with no dirty core return, core tracking paperwork, or return freight expense.
- EPA Compliant: Designed for supported Cummins ISB 6.7L, QSB 6.7L, and B6.7 aftertreatment applications.
- Brand-New Unit: New aftermarket Diesel Oxidation Catalyst rather than a remanufactured core.
- Available Full Kit: Full Kit option includes one (1) 2871453 gasket, one (1) 2866337 gasket, one (1) 2871863 clamp, and one (1) 2880483 clamp.
- Free Shipping: Free ground shipping within the continental United States. Orders placed before 2:00 PM Eastern ship out the same business day when inventory is available.
- Warranty Protection: Backed by a 3-year unlimited mileage warranty.
Signs Your DOC Needs Replacement
- Difficulty reaching or maintaining the exhaust temperatures needed for DPF regeneration.
- Frequent, incomplete, or unsuccessful regeneration cycles.
- Diagnostic trouble codes related to DOC catalyst efficiency or exhaust temperature performance.
- Excessive soot loading in the downstream DPF.
- Fuel, oil, or other contamination visible at the catalyst inlet.
- Increased exhaust backpressure or reduced engine performance.
- Physical cracking, melting, corrosion, or damage to the DOC substrate or housing.
Multi-Warehouse Dispatch
Orders ship from regional fulfillment hubs to help provide fast delivery to your repair shop or location.
*Note: Always verify exact compatibility using your vehicle's VIN number or original stamped OEM part number on the unit before placing an order.
Disclaimer: Product images are for reference only. Each selected option includes one (1) physical DOC unit. The Full Kit option includes one DOC with the listed gaskets and clamps. The DOC Only option includes one DOC only, with no gaskets or clamps included.
