K&N's custom air cleaner assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N.  These custom air cleaner assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be found here. Each complete assembly comes with base, element, and top plate.

14 & 16 Inch Assemblies	11 Inch Assemblies
9 Inch Assemblies	Custom 66 Assemblies
7 Inch Assemblies	Custom Lids and Base Plates
Custom Assemblies with Carburetor Applications	4 inch Nostalgia Engine Assemblies

These filters are legal ONLY for racing vehicles.  Not applicable, nor intended for use on emission controlled street or highway vehicles.

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