Possibly one of the most important but least considered upgrades you could give your Land Rover. If fitting a snorkel is high up on your list of ﾑmust havesﾒ then a raised transmission breather kit should be higher. The real likelihood of the flood or river crossing being deep enough to require a snorkel is far less than the 18ﾔ of water that could potentially cost you a considerable
amount of money rebuilding differentials.
Almost all gearbox casings and fluid reservoir on a vehicle that heat up and cool down in operation will require a breather to accommodate the fluid expansion and contraction. Plunging a hot axle into cold water causes it to quench and suddenly contract and like taking a breath the axle casing sucks in air. If the axle is submerged it will almost certainly suck water passed the seals (designed to keep oil in not water out) which will mix with the oil, dirty water of course will quickly wear seals, bearings and gears and in no time cause failures.
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