Shaft Gear to Top Cover for Mercruiser 74-90 #1 R MR Alpha 45-55796

Vertical Driveshaft used on a Mercruiser Sterndrive.

Goes between the driven gear and top cover bearing.

Many people think this is part of the driven gear but it is actually pressed into the driven gear.

Fits the following applications: All MC-1 R MR Alpha One 1974-1990.

Replaces Mercury Quicksilver # 45-55796.
4-7/8" long