A vehicle snorkel, similar to a submarine's, enables submarines to use diesel engines underwater. When used in vehicles with internal combustion engines needing atmospheric air, snorkels not only enhance wading capabilities for shallow water crossings and amphibious operations but also provide essential dust protection. This safeguard prevents dust and debris from infiltrating critical components to the engine.
The snorkel pipe is typically large and fits over the crew hatch, offering an escape route for the crew if the vehicle becomes immobilized underwater.
Benefits
The benefits of snorkels are particularly pronounced for tanks and armored vehicles, as they ensure the consistent delivery of air to both the engine and the sealed crew compartment, facilitating full submersion while safeguarding against dust-related damage.
Installations
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Aftermarket Availability: For off-road driving enthusiasts and those seeking aesthetic enhancements, similar snorkel equipment is accessible as an aftermarket accessory for many civilian four-wheel drive vehicles. Universal kits are also available, and creating a DIY snorkel system is feasible for most vehicles.
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Routing: The snorkel is typically routed out through one of the front fenders or directly through the hood. It ascends beside the "A" pillar, reaching the roofline where it is terminated with either a mushroom intake or a forward-facing intake. Alternatively, a simple aftermarket cone filter attached to the end of a flexible plastic tubing can serve the purpose. Some users opt to run the tubing directly to the factory air-filter box.
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Sealing Requirement: To ensure successful operation, all air intake components within the engine bay must be well-sealed. Although modern vehicles often have well-sealed external system wiring, additional sealing is advisable for components like computers, fuse boxes, and interior electronics, including radios, entertainment systems, and digital dashboards, which are typically not waterproofed and are susceptible to damage from water intrusion.
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Ventilation Lines: Extended ventilation lines should be installed for the axles and transfer case. These lines are usually no longer than a foot and help prevent water contamination of lubricants. Despite extended vent lines, water may still seep past oil seals, so it is advisable to inspect and change axle and transfer case lubricants if necessary after navigating deep water crossings.
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