Tilt Latch Replacement

We have to replace a number of tilt latches and require two different styles. Pictued is one style we need pictue 28861 shows latch in place, picture 28860 show latch that i removed (had to bust out latch) it was already broken, picture 28856 shows bottom of busted out latch with the number 8590. I am assuming the replacement latch snaps in place and the only way to remove it is to break it out??/ I will submit a post of other latch required.