Here is where I bought the seals for the lower pin on my Alpha One Gen 1. #3 on the exploded view. They changed from a needle bearing with seals to a nylon bushing at some point, but that was after my drive was built, and I was told you cannot put the nylon bushing in a gimbal ring made to take the needle bearing.
GIMBAL RING AND STEERING LEVER
www.mercruiserparts.com
