Just changed the primary oil yesterday and noticed there wasn't a O-ring on the drain plug and from what I could tell there wasn't room for a o-ring. I put the plug back in and put in 26 oz of oil and checked for leaks.........it wasn't leaking. Just curious if other 2002 Fatboy owners had o-rings or not. Thanks!

 

2002 fatboy here. No o ring on the primary plug.

Drew

 

Thanks Drew. I now have peace of mind and won't give it a second thought.