PLM x K&N Adjustable Size 3" 3.5" 4" Universal Air Filter

PLM x K&N Adjustable Size Universal Air Filter Works for piping sizes in 3", 3.5", and 4" inches. K&N filters are hands down the best filters on the market today.  PLM is an authorized distributor for all K&N products, and this air filter is what we use on many of our PLM intake systems.  Adjustable sizes with 3 different inserts fittings:  3", 3.5", and 4". Features:  Designed to increase horsepower and acceleration Includes inserts to fit three different flange diameters High air flow with excellent filtration Clamp-on washable and reusable air filter Universal fitment Measurements: Base outside diameter: 6" inches Top outside diameter: 4.75" inches Height: 5.5" inches Flange length: 1.125" inches Flange inside diameters: 4", 3.5", and 3" (adjustable with inserts) K&N adjustable fitting Universal Air Filters are made with flange inserts which adjust the filter's flange to one of three inside flange diameters. The flange on these filters is made with ultra-strong molded pliable rubber which absorbs vibration and allows for secure attachment. K&N clamp-on universal air filters are washable and reusable.