S&B Clamp-On Crankcase Vent Filter w/ Chrome Top & Shield, 3OD x 2.5H - 1" Inlet ID Item ID: SBCVFCOS-100 Size (spec): 1.00" Material (spec): 1-Ply Reemay Dimensions (spec): 1.00" Outlet ID x 3.00" Cone OD x 2.50" Filter Height (spec): 2.50"