Nick, our GCSC catcher fits most of the commercial Cub Cadet mowers. It should fit the Z-Wing 48. If the opening on the Z-wing looks like the opening at the top of our page for the Cub,
http://www.acceleratorindustries.com...s/cubcadet.htm
the catcher will fit. If you could post a picture of the mower opening (with the deflector up) along with the length and height, I could give you a more certain answer.
Thanks