Cummins L9, B6.7L DPF : OEM 5579376RX

Reliable DPF Replacement for Cummins L9 and B6.7L Engines

What Is It?

The Cummins Diesel Particulate Filter (OEM 5579376RX) is a direct-fit emissions component designed to capture and contain soot from the exhaust of Cummins L9 and B6.7L engines. Installed as part of the aftertreatment system, this DPF supports regulatory compliance and contributes to cleaner engine operation.

Why Choose OEM 5579376RX?

The 5579376RX is engineered to Cummins' exact specifications and offers plug-and-play compatibility with OEM exhaust systems. Its optimized filtration efficiency helps maintain proper backpressure and supports smooth regeneration cycles—minimizing fault codes and unnecessary downtime.

Key Benefits

✅ Designed for Cummins L9 / B6.7L: Built to work seamlessly with medium-duty diesel platforms
✅ Efficient Soot Capture: Traps particulate matter and promotes clean exhaust flow
✅ Thermal Endurance: Withstands high temperatures during active and passive regeneration
✅ OEM Sensor Compatibility: Accepts factory-installed temperature and pressure sensors
✅ Regulatory Support: Helps meet EPA emissions standards and system readiness requirements

Applications

This DPF is ideal for vocational vehicles, transit buses, utility trucks, and industrial equipment powered by Cummins L9 or B6.7L engines. It’s a strong match for fleets that operate in emissions-regulated zones and demand dependable aftertreatment working conditions.

Installation Notes

Install using new clamps and gaskets, and inspect all surrounding components before mounting. A qualified technician should reset the ECM parameters and verify DPF data using diagnostic tools. A regeneration cycle may be required post-install to ensure proper system alignment.

Final Thoughts

The OEM 5579376RX DPF is a dependable choice for maintaining clean exhaust and system reliability in Cummins L9 and B6.7L engines. With factory-grade construction and emissions compliance support, this unit is well-suited for any fleet prioritizing uptime and operational consistency.