Window locks

We have a bunch of different locks that may replace this. Ultimately, it will depend on your dimensions, especially the projection of the fork (which is obscured in your photo). Start by looking at our 38-095, 38-096, 38-138, and 39-139. One of these may be a match, but you'll have to remove yours from the window to get precise measurements, then look over every dimension we show for each part mentioned. That will let you  know if any of those products will work.