Walt,
Welcome to iRV2, we’re really glad to have you here as a new member and are looking forward to reading your posts about your RVing experiences and adventures. You’ll find a great bunch of folks on this site who are
very knowledgeable of RVing, the rigs we use, and the places we go in them.
As you’ll see, they’re eager to help and share their knowledge and experiences with others.
According to
Power Gear's Trouble Shooting Information Manual (page 23), those numbers are obsolete. If I read the chart correctly you should be chasing a Power Gear Replacement Part #13-1111.
Again, welcome to iRV2, we’re glad you joined.