Reply To: 0302035 wrong part number

[Buccaneer]

Looks like they were using the same part number in 1963.
https://www.aomci.org/forums/topic/1963-sportwin-o-ring-on-upper-crank-bearing/

Marine Engine usually show the superceded parts numbers, if any.

If you have the old one, you could try buying a buna o-ring from a hardware
or auto parts store.

Prepare to be boarded!