Product Overview
Restore emission system performance with this premium Skyline aftermarket Cummins 4394820 Diesel Oxidation Catalyst (DOC) Inlet Catalyst Module. Engineered as a direct-fit replacement for Cummins ISB 6.7L, QSB 6.7L, and B6.7 medium-duty engines, this brand-new unit serves as a core-free alternative to OEM numbers 4394820, 4394820NX, 4394820RX, and A055N107. It requires no exhaust system modifications for installation and carries no core charge.
Cross References
| Manufacturer / Program | Cross Reference Part Numbers |
|---|---|
| Cummins OEM (Base Number) | 4394820 |
| Cummins New Exchange | 4394820NX |
| Cummins Reman Exchange | 4394820RX |
| Cummins Other OEM | A055N107 |
| Skyline Aftermarket | BJ0301, BJ0301-M, BJ0301-C |
| Roadwarrior | C0351-ID |
| Dinex | 58206 |
| GESi | GESi-578 |
Choose Your Kit Configuration
Select the setup from the product options above that best fits your shop's needs:
- Full Kit (Best Value): Includes (1) Brand-New DOC, (1) 2871453 gasket, (1) 2866337 gasket, (1) 2871863 clamp, and (1) 2880483 clamp.
- DOC Only: Includes the replacement catalyst module only. Gaskets and clamps are not included.
Key Features & Specifications
- Proudly Built in the USA: Designed, engineered, and manufactured in America.
- No Core Charge: Brand-new aftermarket component; eliminates the hassle and downtime of shipping a dirty core back (Direct replacement for remanufactured number 4394820RX).
- Exact-Fit™ Design: Installs identically to the OEM factory component with zero exhaust system modifications required.
- Industry-Leading Warranty: Backed by a 3-year unlimited mileage warranty.
- EPA Compliant: Meets all federal emissions standards for particulate matter reduction requirements.
- Free Shipping: Free ground shipping within the continental United States. Orders placed before 2:00 PM Eastern ship out the same business day.
Vehicle & Engine Application Guide
Fits 2017 and newer (EPA17) commercial vehicles equipped with the following Cummins engines: Cummins ISB 6.7L / QSB 6.7L / Cummins B6.7. Common applications include:
- Freightliner: M2 106 / Business Class M2
- International / Navistar: Durastar / MV Series
- Ford: F-650 / F-750
- Bus Chassis: Blue Bird / Thomas Built / IC Bus school and commercial bus applications
*Note: Always verify exact compatibility using your engine serial number, emissions family, or original stamped OEM part number before placing an order.
Compatible OEM Assembly Numbers
This inlet catalyst module corresponds to the following factory original equipment assembly part numbers:
Disclaimer: Product images are for reference only. The primary display image may present two angles or configuration references for clarity. Each option selection includes one (1) physical DOC unit. Selecting the "Full Kit" option adds the explicitly listed installation gaskets and clamps to your shipment.
