sorry markus, i don't have the part number for the steel cam. i think now when you look it up they just though the plastic cam at you.
i purchase couple use newer steel cams in the pass off of ebay only when they post good pictures of them and both still had the machine lines going around the lobes.....:thumbsup: one of them i installed on a ohh-motor with the automotive style retainers and keepers and use a 15+ animal spring from dyno cams and has not damage the cam. also run a 50w oil with zinc. that engine now pulls good power up to 4700 rpm's..:thumbsup: also can tell you the newer steel cams can not be welded on and regrinded. so if anybody wants a cam welded you must use a older cam out of a points motor to be safe.
i did post that project build ,but photbucket F...it up.
https://www.oldminibikes.com/forum/tecumseh/131688-tecumseh-ohh-build.html
maybe i will try to fix the thread with new pictures.....:shrug:
the 245 dyno cam is day and night compared to the stock cam.
if i ever run across anything on the ohh motorsorts engine(papers) i will let you know forsure...:thumbsup: