What does a rear differential breather do?

Posted on by Muna Meyer

What does a rear differential breather do?

A differential / axle breather serves the important purpose on a 4WD vehicle of venting the air pressure in your drivetrain assemblies such as differentials, gearbox and transfer case.

Do I need a diff breather kit?

Why are Diff Breathers important? Extended diff breathers are extremely important insurance for your 4WD if you drive through water. In essence, when you go through a puddle that is near or above diff height, you are dunking a hot differential into cold water.

What is a differential breather tube?

An axel / differential breather vent serves the important purpose on a 4WD vehicle of venting the air pressure in drivetrain assemblies such as the differentials, transmission and transfer case. Many drivetrain assemblies are fitted with a breather from the factory.

Why breather is used in gearbox?

Breather allows the hot air to escape and cool air to enter into the transmission to prevent overheating issue. Failure of breather assembly can lead to pressure buildup inside transmission and further leading to leakage from transmission oil seals.

What is the best rear differential fluid?

– Provides gear protection from extreme protection – Minimizes the effects of shock loads – Protects the gear from deterioration – Helps extend the lifespan of the differential and other gears – Promotes flexibility in terms of application to different types of vehicle

Where do you put in the rear differential fluid?

Locate and remove the differential fill bolt. With the differential drain bolt in place,locate the fill bolt near the top of the differential.

  • Insert a pump into the differential fluid. Use a hand pump to fill the differential with fluid.
  • Slowly pump the fluid into the differential.
  • Replace the fill bolt.

    • What are the different types of rear differential fluids?

    transfers torque from the engine to the drive wheels

  • sets the wheels to different angular speeds
  • serves as a reduction gear in combination with the main gear.

    • Does front diff need a breather mod?

    The diff breathers is on the axle and the e-locker breather is located around the same height on the axle. So, yeah you can install a breather for the e-locker as well. For a good write-up on the e-locker and diff breather, check out this overview and install. We will eventually get to this mod, but that will work for you, for sure.