You’ll know the transfer case seal needs replacing when you notice oil leaking from the joint between the transfer case and the extension housing.
Other signs include oil drops on the ground, damp or oily build-up around the housing, or a low oil level in the transfer case.
If the seal has hardened, cracked, or worn from age or mileage, it will no longer hold oil properly.
Replacing the seal restores correct sealing and helps prevent oil loss and damage to the transfer case.
OEM 90311-45034 90311-T0072