Symptoms
Gear oil on the inner front wheels or the six-piston calipers, a gear-oil smell, brakes pulling.
The fix, step by step
- Replace both front axle seals and inspect the shafts for scoring.
- Replace contaminated pads and resurface or replace the rotors. au7o lists this leak for G 63s and rates it critical because the oil ends up on the brakes.
Tools & part numbers
- Seal puller and driver
- hub tools
- GL-5 gear oil
- brake parts if oil-soaked
Where to buy the parts
Genuine Mercedes front axle shaft seal 009 997 28 47FCP Euro ↗Amazon ↗
Genuine Mercedes front wheel seal 463 334 01 59FCP Euro ↗Amazon ↗
Red Line 75W-90 GL-5 gear oil (1 qt)FCP Euro ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Mercedes-Benz G 63 AMG parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.