It's quite likely to be this one.. https://www.rockauto.com/en/moreinfo.php?pk=18727057&cc=3442520&pt=1952&jsn=8 although they seem to be out of stock on the left front. I still bought one of these along with all four of my rear wheel cylinders, just to have in stock for later.


1965 C60 school bus | 1967 GMC 6500 school bus