Seller notes

Looking to add some airflow to your 2007.5-2017 stock or modified Cummins diesel? Our “Max-Flow” Air Horn gets rid of the restrictive factory air horn and opens up 100%+ more flow to your engine (flows similar to a Banks Monster Ram). Whether you are just trying to make your stock truck run better or free up much-needed flow with an upgraded truck this is the upgrade for you. We made some great changes to the horn including adding an Us-Made Viton Oring instead of a gasket so you no longer h...

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