400EX carburetor code number?

[firestarter7237]

Hi there, i bought a used 300Ex and i'm about to rebuid the carburetor.

My carburetor is a QB10A and i think it's a 400EX carb. Is it?

Cause stock 300Ex is QB02A.

[firestarter7237]

I just find it, it's a Keihein QB10A.