Cummins ISB 6.7L DOC Filter 2018-2021: OEM 62420B05

Clean Emissions Start Here: Cummins ISB 6.7L DOC Filter – OEM 62420B05

What is it?
The Cummins Diesel Oxidation Catalyst (DOC) Filter (OEM 62420B05) is a genuine emissions system component designed to reduce harmful pollutants in the exhaust stream. Installed as part of the aftertreatment system, the DOC helps convert hydrocarbons (HC) and carbon monoxide (CO) into less harmful gases through oxidation.

Why Choose OEM 62420B05?
OEM 62420B05 is built specifically for Cummins ISB 6.7L engines from 2018 to 2021. This DOC filter meets strict emissions standards and is engineered to integrate seamlessly with the engine’s SCR and DPF components, helping maintain compliance and avoid costly service interruptions.

Key Benefits
✅ Designed for 2018–2021 Cummins ISB 6.7L engines for a perfect fit.
✅ Supports cleaner emissions by reducing HC and CO from the exhaust.
✅ Built with OEM-grade materials to withstand extreme exhaust temperatures.
✅ Meets regulatory standards for diesel emissions systems.
✅ Installs easily in the factory location—no custom fitting required.

Applications
The OEM 62420B05 DOC filter is used in a variety of vehicles equipped with Cummins ISB 6.7L engines, including medium-duty trucks, buses, and off-road equipment. It serves as a critical first step in the emissions control process, working alongside the DPF and SCR to meet EPA standards.

Installation Notes
Installation should be performed by a professional familiar with diesel aftertreatment systems. Allow the exhaust system to cool completely before beginning. Inspect all gaskets, clamps, and sensors for wear, and replace as needed. Proper alignment and sealing are essential for optimal DOC working conditions and leak prevention.

Final Thoughts
The Cummins OEM 62420B05 DOC Filter offers a reliable solution for maintaining emissions compliance and protecting engine efficiency. With its precise fit and durable build, it’s the go-to replacement for ISB 6.7L engines from 2018 to 2021 when emissions system service is due.