most 4x4's need the bigger "15mm" connectors/tubes.

fit a breather filter onto catch can hose connector. not in the photo's is the plastic cover that goes around the filter. wrap a bit of plastic sheet around the side of the filter and fasten it down with a cable tie around the top. that forces the gas coming out of the filter to go down into the bottom of the can

example of plastic wrapped around internal filter.

screw filter to through top hole of catch can

note the gap. you need to have a good gap which is why the filter was conencted to the end of the hose fitting.

fit pipe fittings to other end of connector thread. 2nd breather filter fits into one of the side holes. any holes not used need to be plugged.

assembled
i just have to seal the connectors, put the sight glass etc on the can then fit it to the ute.