OFFROADlife4x4 Diff Breather Kit – 4 Port Universal

AUD$55.00 incl. GST

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A diff / transmission breather serves an important purpose on 4WD vehicles in the form of releasing the air pressure in drivetrain assemblies such as differentials, transmissions, gearbox, transfer case, winches & hub assemblies. Under normal operation, these assemblies heat up and the air inside expands, increasing the pressure and therefore needing to be vented to the atmosphere so the pressure doesn’t create damage to bearing and oil seals. When the drive train assembly cools down the air inside contracts and creates a vacuum and the breathers allow air to flow under suction.

Many drivetrain assemblies are fitted with a breather from the factory. These factory breathers are usually a one-way valve mounted directly to the housing or remotely on a short tube. The shortfall with the factory breathers is that driving through water crossings creates a vacuum caused by the drive train assembly being cooled rapidly by the water. This vacuum will tightly close the valve shut causing air to be instantly drawn into the assembly through the seals. Many times the seals are still submerged below water, leading to the water being drawn into the drive train. This will contaminate the oil and severely damage drivetrain components.

OFFROADlife4x4 breather kits are designed from high qualitly stainless steel parts for long life and durability. They are designed to eliminate airflow issues and contamination to your driveline by providing a high flow, zero back pressure, and zero vacuum air control system. This is achieved with high flow air filters within a central manifold that will allow 4 port assemblies to be vented to one central location, on your vehicle which is idealy above the water level at all times. These Kits are designed to replace your factory breathers and contains enough fittings and tubing to connect all drive train assemblies. More tubing and push-in fittings can be purchased separately to connect up to other areas on your vehicle that require Filtered Air Flow on a continual basis such as Winches.

Included in the Kit:

  • Stainless Steel Bracket with 4 x stainless steel breather ports.
  • 15M PU hose 6mm, high temp rated.
  • 10 x cable ties.
  • 2 x galvanized self tapping screws to mount bracket.
  • 2 x straight 1/8 BSPT – 6mm push fittings
  • 2 x 90 deg elbow 1/7 BSPT – 6mm push fittings


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