When drivetrain assemblies such as your vehicle’s differentials, gearbox and transfer case heat up under normal operation, the air inside expands and increases pressure. To vent this additional pressure, most factory differentials have a one-way valve mounted to either the assembly itself, or on a short extension tube close by. Unfortunately, when the drivetrain assembly cools down, the air inside contracts, creating a vacuum. When cooling occurs during a water crossing, these one-way valves can draw water into the system or if blocked will draw water in through axle seals, potentially causing expensive damage.

DIESEL BOSS Differential Breather Kits are designed to replace factory breathers with a 2/4/5/6 port. This is achieved with high flow air filters within a central manifold that will allow from 2,3,4,5 & 6 port assemblies to be vented in a central location, ideally somewhere on the vehicle that will be above the water level at all times (bracket high up on firewall). This design helps to prevent water, mud and other containments from getting into your differentials, gearbox and transfer cases. This is essential upgrade for all 4X4 enthusiasts.

This universal kit is supplied with the following components

• 1 x Stainless Steel Mounting Bracket
• 2 x 1/8 BSP M to 1/4 PU
• 2 x 1/8 BSP M to 1/4 PU 90 degree
• 4 x 1/8 BSP F to 1/4 PU bulk head
• 4 x 1/8 BSP filter
• 3 x self tapping screws
• 1 x 10 meter 1/4" Low Density Polyethylene hose, High Temp Rating with temperature range of -20°C to 110°C, Pressure range to 180PSI
• 15 x cable ties
• 1 x Fitting Instruction Document