Looks like maybe 124379N689314
June 30 stamp
https://www.facebook.com/marketplace/item/1526061748790484/?ref=browse_tab&referral_code=marketplace_top_picks&referral_story_type=top_picks
A ratio code is M20
2 rings cut in the input shaft also signifies M20
Do you want me to fix your post?
Sure
Thanks Bryon. I dont know why I had M21 in my head while knowing what the codes and rings mean.