ARB Differential Breather Kit

SKU 170112 A diff breather kit stops your differentials (as well as gearbox and transfer case) from sucking in water when driving through river crossings and large water hazards, leading to serious and expensive repairs. As your vehicle’s differentials, gearbox, and transfer case heat up under normal operation, the air inside expands and increases pressure in the casings. To manage this increase in pressure, most of these components come standard with a series of one-way-valve breathers to allow the pressure build-up to escape. However, when you enter a river crossing or large water hazard, the cold water quickly cools the expanded cases causing them to quickly retract in size; this forms a vacuum effect on the breather valves. One-way breather valves will not let any air in, and as a result, water will often be sucked in through your surrounding oil seals allowing water ingress into your casings, axles, and differentials; leading to corrosion and serious damage. To overcome these com