Snorkel good, what about air box?

Put the lid on, then 100mph tape around the lid and air cleaner box, [one lap of tape] then put the clamps on, easy to remove, cheap, and can be done on the road when required.

Jeff

Usually it's a pretty good seal, otherwise dust etc would get in and bypass the filter element. If you're still uncertain ... go with the duct tape.

Cheers

Jeff,
The tape shouldn't be needed unless the clamps don't seem to be holding the lid down tight enough. There should be a rubber "O" ring seal between the lid and the canister. If that's in good nick and the clamps are tight, how can water by-pass it?
JMHO
Cheers,
Roachie

There will be a rubber water draining hole in the bottom of the air box too to let any small amounts of water out of the airbox. When going through deep water tape over this so as water does not come back up into the airbox and into the inlet pipe. When you have crossed the water take the tape off again and it will drain water out. My Hilux occasionally gets a bit of water down the snorkle in heavy rain.

Gday Jeff, it's also worth checking that the fitters sealed your snorkel properly, have read a few horror stories about this not being done as well as it could be so you end up with a useless snorkel............Still looks good though...LOL.

Jeff. you'll be amazed at the amount of air a diesel sucks through the filter even at idle!! The best way to give piece of mind is get an assistant to place say an ice-cream bucket lid over the intake (top of snorkel) while the engine is idling while you pass a lit cigarette around any joins in the snorkel or the top of the air cleaner etc. Only be able to do this in short hits otherwise the engine will conk out, but it will allow you to see any leaks because it will suck the smoke in. Obviously do it in your garage where there is no wind. Pays to put a light film of rubber grease (grab a finger full from you tyre shop) around the o-ring seal at the top of the air cleaner and silicon up any other leaks you find. Hope this helps.
Cheers,
Hughesy