First things first, ARB will not be producing a snorkel for the Tundra. However, they do have a snorkel that may work us. I'll be working on fitting it in the coming weeks. I'll snap a mock up picture asap. If there is any interest, please post up.
:tu: You always contribute good stuff on this forum. If I lived in an area that required frequent 4WD use, my truck would have been built similar to yours.What really stirred my interest in this was T-SB-0396-09.
"Some Sequoia and Tundra vehicles operated in areas with significant snow volume may experience
snow accumulation in the air cleaner box which can cause the lid to fracture. The air cleaner lid and
fender liner have been revised to reduce accumulation."
07 - 10 Tundra and Sequoias can be prone to pulling allot of whatever lighter contaminants into the airbox entry that the wheel happens to be slinging. In my situation having the ARB bumper has eliminated some of the liner and the situation is worse. My truck is used heavily offroad in deep snow and just about everything else. While I have not cracked an airbox, the tattletale vacuum gauge on the airbox will all of a sudden head for the red. Much of the time it is fine, but certain conditions allow it happen and I am replacing the filter.
There was a day when even some USA Toyota Cruisers were equipped with dust seperators... those days are gone. Toyota does still install them today along with factory snorkels on some vehicles for the "rougher" markets.
As for deep water, anything is possible.