Set of sockets 30mm and larger?

[Wincks2]

Getting an injector out of my 6.2 engine requires a 30mm tool.

My shallow socket is too shallow. My wrench is too big and long to fit in there.

So I guess I need a 30 mm deep socket or an equivalent tool. A store near here thinks a 30 mm axle nut socket may do.

So I could get the individual piece or a spend more for a socket set with bigger sizes than my current set.

Are there other things on these trucks than need sockets bigger than a deep 30 mm socket?