About this part
What it does. Dorman Mas Industries Suspension Ball Joint Dorman - MAS Industries 778-BJ12225 controls wheel movement and keeps the tyre in contact with the road.
Symptoms that point to this part
- Bouncy or floaty ride
- Clunking over bumps
- Uneven tyre wear
- Nose-diving under braking
Service note. Suspension components are replaced in pairs per axle wherever possible.
Fitment. Catalogued as fitting 2026 Audi S5, 2026 Audi Q5 Sportback, 2024 Audi Rs6 Avant. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.