Cummins QSB 6.7L, ISB SCR Filter 2011-2017: OEM 5418022

Consistent SCR Exhaust Conditioning for Cummins QSB 6.7L & ISB Engines (2011–2017)

What is it?
The Cummins QSB 6.7L / ISB SCR Filter, referenced by OEM 5418022, is an aftertreatment filter used in the SCR emissions system on Cummins engines built from 2011 to 2017. Positioned within the exhaust stream before the SCR catalyst, it helps manage and condition exhaust flow so the system can carry out NOx reduction properly when DEF is introduced downstream.

Why choose this SCR Filter?
Emissions systems depend on correct airflow balance and properly prepared exhaust gases. This SCR filter is designed to match Cummins factory specifications for the QSB 6.7L and ISB platforms, supporting accurate fitment and smooth compatibility with sensors, DEF dosing components, and control logic. When filters become restricted or deteriorated due to exhaust deposits, the system can experience irregular emissions behavior, warnings, or inconsistent SCR response. Installing the correct OEM-specified unit helps restore stable exhaust conditioning and predictable aftertreatment operation.

Key Benefits
✅ Designed for Cummins QSB 6.7L and ISB SCR systems (2011–2017)
✅ Helps stabilize exhaust flow prior to SCR treatment
✅ Supports reliable interaction with DEF dosing and sensor feedback
✅ Direct replacement fit—no fabrication or modifications required
✅ Built for high-heat commercial and equipment duty cycles

Applications
This SCR filter is commonly used in medium- and heavy-duty vehicles equipped with Cummins QSB 6.7L or ISB engines from 2011 through 2017. It fits a variety of work applications including delivery trucks, vocational fleets, regional transport vehicles, and equipment platforms where regulated emissions handling is required.

Installation Notes
Allow the exhaust and aftertreatment system to cool completely before beginning service. Remove the existing SCR filter and inspect surrounding mounts, sensor connections, and DEF-related components for buildup or wear. Install the replacement filter using proper clamps and seals to ensure a secure, leak-free connection. After installation, clear any stored codes and confirm normal SCR system behavior using diagnostics.

Final Thoughts
If your Cummins-powered vehicle is experiencing emissions-related alerts or uneven SCR operation, replacing the SCR filter with the correct OEM component can help restore consistent exhaust conditioning and smoother system response. The Cummins QSB 6.7L / ISB SCR Filter (OEM 5418022) plays an important role in maintaining dependable aftertreatment operation throughout daily service use.