Pic of pass. side front axle !!

[Hellz]

why would this have fallen off or been removed during a half shft replacement?

maybe i have been doing mine wrong, but all i had to do was remove the compression bolt for the half shaft on the Hub and then remove the 6 or so bolts from the flange. pull old HS off and reverse to put the new one on.......

little tricky with tires on, but is possible... i think i removed the shock to help out.. still easy.. think i had it swapped out within 45 mins