Cummins B6.7 SCR Filter 2018-2021: OEM 5418508

Advanced Aftertreatment Precision: Cummins B6.7 SCR Filter (2018–2021, OEM 5418508)

What is it?
The Cummins B6.7 SCR Filter (2018–2021, OEM 5418508) is a Selective Catalytic Reduction (SCR) module designed for use with the Cummins B6.7 engine series during the 2018-2021 model years. Its role is to convert nitrogen oxides (NOₓ) in the exhaust into harmless nitrogen and water by utilizing diesel exhaust fluid (DEF) in the aftertreatment system.

Why Choose the Cummins B6.7 SCR Filter (OEM 5418508)?
This unit is built to Cummins' factory specifications—ensuring the same mounting geometry, sensor interfaces, and exhaust flow characteristics as the original equipment. Using an OEM-matched filter helps ensure proper integration with the engine’s emission control system, reduces risk of fitment issues or errors, and supports long-term reliability in your aftertreatment system.

Key Benefits
✅ OEM-Accurate Fitment: Designed to align exactly with factory flanges, sensors, and exhaust pathways.
✅ Durable Construction: Built to handle heavy duty cycles, thermal loads, and vibration encountered in commercial use.
✅ Effective NOₓ Reduction: Supports the SCR process by converting harmful exhaust gases into safer by-products.
✅ Operational Stability: Helps minimize fault codes, maintain steady emission performance, and support system integrity.
✅ Downstream Protection: Cleaner exhaust output enhances the life of sensors, DPFs, and other aftertreatment components.

Applications
The Cummins B6.7 SCR Filter (2018–2021, OEM 5418508) is ideal for medium- and heavy-duty trucks, fleet vehicles, and commercial equipment equipped with the B6.7 engine in that model range. It is well suited for regional and highway duty where emissions compliance and system durability are key.

Installation Notes
Installation should be handled by experienced technicians. Begin by verifying engine compatibility and part number. Remove the old SCR filter module carefully, taking note of sensor wiring, exhaust connections, and mounting flange alignment. Clean all mating surfaces, replace any gaskets or clamps as required, and ensure secure torque on bolts. Connect all sensors and wiring harnesses, and once the unit is installed, clear any diagnostic trouble codes. Monitor exhaust temperatures, back-pressure levels, and sensor feedback during the initial startup run. Verifying the system recognizes the new module and operates within expected parameters will help achieve reliable performance and longevity.

Final Thoughts
Emissions control in modern diesel engines depends on precision-engineered components. The Cummins B6.7 SCR Filter (2018–2021, OEM 5418508) offers a factory-matched, high-quality solution crafted for durability and performance—helping protect your vehicle investment and support emissions compliance mile after mile.