NEW MerCruiser (Alpha One) Upper Gear Set (Pinion and Drive)
(1.32:1 gear ratio) (16-20 Gear Ratio)
Fits a variety of 1986-1995 MerCruiser Stern Drives.
*Models: Alpha One SS years 86-89.
*Models: R/MR/Alpha One years 83-90.
*Models: SSM 11/111/1 82-95.
43-66773A3 supersedes to 43-8M0080756. Any questions contact us with your serial number and information before ordering.