Cummins B6.7, L9 SCR Filter 2018-2024: OEM 5418485

Dependable NOx Control for Cummins B6.7 & L9 Engines

What is it?
The Selective Catalytic Reduction (SCR) filter for Cummins B6.7 and L9 engines (model years 2018–2024), OEM reference 5418485, is a critical emissions-control component. It plays an important role in reducing nitrogen oxides (NOx) in exhaust gases as part of the aftertreatment system, helping the exhaust output meet regulatory standards and maintain consistent operation.

Why choose this SCR Filter?
Built to original equipment specifications for both B6.7 and L9 engine platforms, this SCR filter offers correct fitment and reliable system compatibility. A worn, blocked, or mismatched filter can cause higher exhaust restriction, erratic regeneration cycles, or emissions-related fault codes. Installing the correct SCR filter helps sustain proper exhaust flow and steady aftertreatment performance.

Key Benefits
✅ Supports effective NOx reduction within the aftertreatment system
✅ Helps maintain proper exhaust flow and reduce restriction
✅ Direct-fit design — no modifications required
✅ Constructed for heavy-duty, high-temperature operating environments
✅ Helps protect and extend the life of downstream SCR components

Applications
Ideal for medium- and heavy-duty trucks, commercial vehicles, and equipment powered by Cummins B6.7 or L9 engines manufactured between 2018 and 2024. This SCR filter is especially suited for fleets and operations where emissions compliance and dependable aftertreatment performance are priorities.

Installation Notes
Before servicing, allow the exhaust and aftertreatment system to cool completely. Remove the existing SCR filter and inspect the adjacent exhaust piping, sensors, and mounting hardware for buildup, wear, or damage. Install the replacement using fresh clamps, gaskets, and seals. After installation, clear any emissions-system fault codes and verify proper system behavior through diagnostic checks.

Final Thoughts
If your B6.7- or L9-equipped vehicle is showing signs of elevated exhaust restriction, emissions warnings, or irregular aftertreatment system behavior, replacing the SCR filter with the correct OEM-specified unit is a practical step toward restoring consistent, dependable exhaust treatment. This component plays a vital role in maintaining emissions-control integrity and supporting reliable equipment operation.