K&N 62-1470 Vent Air Filter / Breather: Vent Air Filter/ Breather; 1.75 in (44 mm) Flange ID; 2.5 in (64 mm) Height; 3 in (76 mm) Base; 3 in (76 mm) Top Clamp-on design Washable and reusable Pliable rubber flanges absorb vibration Some available with choice of rubber or chrome top