Cummins B6.7 DOC Filter 2022-2024: OEM 4395110

Trusted DOC Filtration for Cummins B6.7 Engines (2022–2024)

What is it?
The Diesel Oxidation Catalyst (DOC) filter for the Cummins B6.7 engine (model years 2022–2024), OEM reference 4395110, is a key emissions-control component. It helps convert hydrocarbons (HC) and carbon monoxide (CO) in the exhaust stream into cleaner, less harmful gases, supporting the aftertreatment system in maintaining consistent and dependable operation.

Why choose this DOC Filter?
Designed to meet original equipment specifications for the B6.7 platform, this DOC filter offers precise fitment and dependable integration with the exhaust and aftertreatment system. A mismatched, worn, or blocked filter can lead to elevated exhaust restriction, more frequent regeneration cycles, or emissions-related fault codes. Installing the correct DOC filter supports steady exhaust flow and reliable system behavior.

Key Benefits
✅ Converts HC and CO into cleaner exhaust output
✅ Supports the proper function of downstream aftertreatment components
✅ Helps maintain steady exhaust flow and reduce restriction
✅ Direct-fit design — no modifications required
✅ Built for heavy-duty, high-temperature operating environments

Applications
Ideal for medium- and heavy-duty trucks, commercial vehicles, and equipment powered by Cummins B6.7 engines from model years 2022 through 2024. This DOC filter is especially suitable for fleet, vocational, and on-road applications where emissions compliance and dependable aftertreatment performance are essential.

Installation Notes
Before beginning service, ensure the exhaust and aftertreatment system has fully cooled. Remove the existing DOC filter and inspect adjacent exhaust piping, sensors, and mounting hardware for soot buildup, cracks, or signs of wear. Install the replacement using fresh clamps, gaskets, and seals. After installation, clear any stored emissions-system fault codes and verify proper exhaust system behavior through diagnostic checks.

Final Thoughts
If your B6.7-equipped vehicle is experiencing increased exhaust restriction, emissions warnings, or inconsistent aftertreatment system function, replacing the DOC filter with the correct OEM-specified unit is a practical way to restore clean, dependable exhaust flow. This component plays an important role in maintaining the integrity of the emissions-control system and supporting reliable equipment operation.