This is a rebuilt starter I purchased for a Marine engine. Once I installed the starter I found out the motor was junk. So, I parted it out and have the starter left. It only has about a half dozen starts on it. It is from the inline 6 but, will probably work on the 4 cylinder as well. Please see my store for other Marine related items.
While we have a few SD33 owners here, your Q might get better response over at http://www.binderbulletin.org. Lots of SD33 owners in Oregon, and they post there. I'm really not all that familiar with the SD33.
