Transfer Case Companion Flange Seals

Replacement Parts > Transfer Case > Gaskets and Sealing Systems

Transfer Case Companion Flange Seals

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What is a Transfer Case Companion Flange Seal?

A Transfer Case Companion Flange Seal is a component of the drivetrain system in your vehicle that seals the connection between the transfer case and the companion flange. It helps to keep dirt and debris from entering the transfer case and interfering with the internal components.

What is the purpose of a Transfer Case Companion Flange Seal?

The primary purpose of a Transfer Case Companion Flange Seal is to seal the connection between the transfer case and the companion flange in order to prevent dirt and debris from entering the transfer case. It also helps to dampen vibrations, keeping the transfer case running smoothly.

How can I tell if my Transfer Case Companion Flange Seal is faulty?

You can check the condition of your Transfer Case Companion Flange Seal by inspecting it for any signs of wear and tear, such as cracking, tears, hardening, or excessive heat. You should also make sure that the seal is properly seated and that the connection between the transfer case and the companion flange is secure.

Can a faulty Transfer Case Companion Flange Seal cause damage?

Yes, a faulty Transfer Case Companion Flange Seal can cause damage to the internal components of your transfer case. If dirt or debris is able to enter the transfer case, it can cause excessive wear and tear on the components, resulting in costly repairs.

How do I replace a Transfer Case Companion Flange Seal?

Replacing a Transfer Case Companion Flange Seal is a fairly straightforward job. To do so, you'll need to:

  1. Disconnect the battery and drain the transfer case fluid.
  2. Remove the transfer case from the vehicle.
  3. Unbolt the companion flange from the transfer case.
  4. Clean the mating surfaces of the transfer case and companion flange.
  5. Install the new Transfer Case Companion Flange Seal.
  6. Reassemble the transfer case and companion flange.
  7. Refill the transfer case with new fluid.
  8. Reconnect the battery and test drive the vehicle.


How often should I inspect my Transfer Case Companion Flange Seal?

It is recommended to inspect your Transfer Case Companion Flange Seal at least once a year, or every 10,000 miles, whichever comes first. Additionally, it is important to inspect the seal any time you notice any unusual sounds or vibrations coming from the transfer case.