mechanic calls it a wishbone on 1997 BMW 750iL

right rear wheel makes a squeeking noise when i slowly go over a speed bump,mechanic calls it a wishbone,whats the cost for parts and labor

Asked by for the 1997 BMW 750iL
I think he's talking about a rear upper control arm $261 each one for each side and .7 hrs labor for one side and 1.2 hrs for both not including alignment.