Emgo Crankcase Vent Filter Kit 14-20900 High-quality crankcase breather and filters from Emgo Crankcase breather vents filter kit features a one-piece, chrome-top filter, hose clamp and die-cast mounting base; accepts 3/8in i.d. hose Black rubber-top crankcase filter can be clamped directly to 3/8in i.d. hose Black rubber-top crankcase filter can be clamped directly to 3/8in i.d. hose