K&N Universal Clamp On Filter Red Fits 4 in (102 mm) Height: 5.5 in (140 mm) H x 6 in (152 mm) Base OD x 4.75 in (121 mm) Top OD - KNRG-1001RD

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.

• 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