Symptoms
Vibration or judder at speed, clunks on take-up, cracked rubber flex discs, notchy U-joints.
The fix, step by step
- Grease the propshaft joints and slip yokes at every service; G-luxe Travel has a quick W463 guide.
- Inspect the flex discs (guibos) and the centre support bearing.
- Replace flex discs in pairs if either looks marginal, and recheck the bolt torque after a few hundred miles.
- A shaft that still judders after that needs rebuilding or replacing.
Tools & part numbers
- Grease gun with needle adapter
- new flex discs and bolts
- torque wrench
- centre-drive-shaft bolt N000000006359 / nut N910113010003 as needed
Where to buy the parts
Flex disc / guibo (Mercedes)FCP Euro (search) ↗
Driveshaft center support bearing (G 500)FCP Euro (search) ↗
Center drive shaft bolt (463)Expedition Imports ↗Amazon ↗
Center drive shaft nutExpedition Imports ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Mercedes-Benz G-Class W463 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.