Axle Seals

Axle seals are essential components in a vehicle’s drivetrain, designed to keep differential or transmission fluid from leaking where the axle shaft enters the transmission or differential housing. Each seal sits around the axle shaft and helps maintain proper lubrication inside the assembly while preventing contaminants like dirt and water from entering.

There are different types of axle seals depending on the vehicle’s configuration. A CV axle seal is typically found in front-wheel-drive or all-wheel-drive vehicles and is located where the CV axle connects to the transmission. A rear axle seal is found in the rear differential and is critical for keeping gear oil contained within the housing.

An axle seal leak can occur due to wear, heat, or improper installation. Common signs include visible fluid around the seal area, a burning smell from leaking oil contacting hot components, or unusual drivetrain noises. Left unaddressed, a leaking seal can lead to low fluid levels, increasing the risk of damage to internal gears or bearings.

Axle seals should be inspected during routine maintenance or when servicing the axles, as early detection of a CV axle seal or rear axle seal issue can help prevent more extensive drivetrain damage.