The Cummins B6.7 Diesel Particulate Filter (DPF) – OEM 4394227 is a high-efficiency emissions control component designed for Cummins B6.7 6.7L diesel engines. It captures and stores harmful soot and particulate matter from exhaust gases using a durable ceramic wall-flow filter structure. The collected soot is periodically removed through a regeneration process, which helps maintain optimal exhaust flow and consistent filter performance. This results in reduced backpressure, improved fuel efficiency, and cleaner emissions. Built for heavy-duty commercial and fleet applications, it ensures reliable durability, long service life, and compliance with emissions standards in demanding operating conditions.