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Removes factory restriction
High-flow intake tube for improved efficiency
United States (including US Territories)
This conversion kit allows you to replace the failure-prone CP4 with the proven and reliable CP3 pump setup — the same style pump trusted in earlier Duramax platforms and high-performance builds
this Armor Lite system delivers an easy bolt‑on installation with no cutting or welding required
2003-2026 CUMMINS AIRAID SYNTHAFLOW OILED REPLACEMENT AIR FILTER (850-357) Graphic Tee Removes factory restrictionUpgrade your factory air filter with the Airaid SynthaFlow Oiled Replacement Air Filter, designed to improve airflow, increase engine efficiency, and provide long lasting reusable performance for your Cummins. This drop in replacement installs directly into the factory airbox and offers better airflow than restrictive stock paper filters while maintaining excellent filtration. The SynthaFlow filter uses multiple layers of oiled cotton and synthetic
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