I was expecting a hex nut but I find a bolt and my highest socket (22mm) doesn't fit, it's not that far away though. So wondering if anyone knows the size or where to find out as I'd have to guess and could end up having to buy several sockets and they are not cheap?
I'm guessing 24mm but that's a guess.
What is the size of the sump nut in a c4 2006 coupe?
Moderator: RichardW