Transfer Box Oil Seal

What is a Transfer Box Oil Seal?
The transfer box oil seal is a component in the transfer case of a four-wheel-drive or all-wheel-drive vehicle. Its primary function is to create a barrier that prevents the leakage of oil from the transfer case. The transfer case is responsible for distributing power to both the front and rear axles and may contain various gears and components.

The oil seal is typically situated at the point where the driveshaft connects to the transfer case. It ensures that the lubricating oil inside the transfer case remains contained, preventing it from leaking out and contaminants from entering. A properly functioning transfer box oil seal is crucial for maintaining the integrity of the lubrication system, preventing damage to internal components, and ensuring the efficient transfer of power between the front and rear wheels. Regular inspection and replacement of the transfer box oil seal as needed are important for the longevity and reliability of the vehicle's four-wheel-drive system.
What problems can be caused by this part?

Squeaking noise under the car

There is a squeaking sound coming from under the car when the car is moving, it sounds like something is squeaking as it rotates.

Oil leaking from transfer box

The area immediately around the transfer box is leaking oil or has a misting of oil around the areas where the shafts join the transfer box.

Oil leaking onto floor

There appears to be a puddle of oil underneath the car, the oil looks fresh and seems to be dripping from parts of the engine.