Diesel engines rely on advanced emissions systems to reduce harmful exhaust pollutants, and the Cummins ISL DPF Filter (2008–2011, OEM 4969838) is a core part of that process. The Diesel Particulate Filter (DPF) captures soot and other fine particles produced during combustion, helping your engine meet emissions standards while maintaining smooth performance. Choosing the correct OEM-grade DPF filter ensures dependable filtration, proper fitment, and long-lasting operation on Cummins ISL engines.
This DPF filter plays a vital role in emissions control — here’s why it matters:
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Captures Harmful Particulate Matter – Traps soot and solid exhaust particles before they exit the tailpipe, reducing environmental pollutants.
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Supports Regeneration Processes – A functioning DPF helps the engine’s regeneration process burn off accumulated soot, keeping the filter performing efficiently.
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Helps Maintain Engine Efficiency – By reducing excessive backpressure, the filter supports smoother airflow, which helps maintain consistent engine performance.
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OEM-Grade Fit and Durability – As OEM 4969838, this DPF filter matches original specifications for shape, media design, and reliable long-term performance.
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Prevents Exhaust-Related Issues – Replacing a worn or clogged filter helps avoid reduced power, increased smoke, higher fuel use, and emissions system warnings.
A failing or restricted DPF can lead to reduced engine efficiency, elevated emissions, and potential diagnostic codes or derate conditions. The Cummins ISL DPF Filter (OEM 4969838) provides the OEM-standard quality and filtration performance your emissions system depends on — helping keep your diesel engine running cleanly and efficiently. For customers seeking a trusted replacement part, Tamerx offers high-quality components designed to support consistent emissions performance and reliable engine operation.



















