Faceplate or front of pump shown as #1 in pic. All J200 and J300 series AFTER 6/2009.
48 Frame motor size for "bracketless" motor applications (no mounting base plate on motor body).
Obvious visual identifier is two posts next to drain plugs, which are absent on previous versions (red arrows), as well as matching rear housing shown with raised flange(yellow arrow)and scalloped out volute on top (inside) surface.
You are buying front of pump housing only (#1 in pic). Seal, o-ring, and rear housing sold separately.