Need help ID'ing a front loader pump on 2N

[grunt]

This pump has a small leak issue the becomes a big problem once the temp drops here in iowa. I would like to just pull it and replace it but I cant seem to ID it. It has no marks other then a casting mark and it looks like it might of been yellow at one point. It works a tilt bucket on a 2N. If you could help me find a replacement I would be greatfull.
Thanks