Small Engine Finned cast aluminum breather over flow bottle for go karts, mini bikes and barstools, these small engine breathers are Australian made and are a universal fit. Length is 105mm body diameter is 44mm, maximum fin diameter is 55mm. The back is flat si it can be mounted to frames or seat mounts with stainless cable ties or 2 worm drive clamps. A 12mm hole is in each end that can be tapped for a screw in plug or a drain plug can be fitted.
These are sold as a raw casting that you can weld, drill, add fittings or breather fittings to.