New Old Stock B Drive Shaft Part Number 45-20909 (?).   This shaft is for use with the shallow skeg gear case with the multi inlet holes as originally supplied with the Mark 20H engines.  This is the last original drive shaft like this that we have.  No rust any where on the shaft, it had the original sealing protection on the ball bearng area of the shaft.  This drive shaft uses the thick pilot  bushing and the thinner bearing.