Rebuild Kit Upper Unit for Mercruiser R, MR, Alpha One Drives 1.50 1.47

Rebuild Kit for Drive Shaft Housing on Mercruiser R, MR and Alpha One Drives, 20/22 1.50 or 1.47 ratio, most V8s; 9.5 Inch Yoke Shaft, top cover bearing 1.9375" Includes all internal parts except the housing itself. Fits all upper units 1974-1990. Pre 1974 units have an 8 spline lower unit driveshaft wich will not fit this later 13 spline gearset.

GLM19190 FITS THE FOLLOWING MERCRUISER APPLICATIONS
MODEL	RATIO	YEAR	SERIAL RANGE
888	1.50	1971-1977	3106717 and Up
225-S	1.50	1974	3856268-4200499
898/228/260	1.50	1977-1982	4782330-6225576
R	1.50	1983	6225577 and Up
MR/Alpha One	1.50	1984-1990	6225577 and Up
MR/Alpha One (CR)	1.50	1984-1990	6225577 and Up