K&N 62-1600RD Vent Air Filter / Breather: Vent Air Filter/ Breather; 0.375 in/0.5 in (10 mm/13 mm) Flange ID; 1.75 in (44 mm) Height; 2 in (51 mm) Base; 1.5 in (38 mm) Top Clamp-on design Washable and reusable Pliable rubber flanges absorb vibration Some available with choice of rubber or chrome top