For R/MR/Alpha One From 1976-1990 Mercruiser Sterndrives. Kit includeds both Style water hoses (3/4" & 5/8"). Includes an exhaust bellow for quiet engine operation. If you are looking for the Performance transom kit the part number is 21951. The 21951 kit is the same as this kit (21950) But instead of an exhaust bellow it has a exhaust tube. Both will work on any Alpha One Sterndrive 1990 and before, but the exhaust tube will provide a little extra horsepower and engine operation will be louder. Want to make installing that exhaust bellow easier? Add a bellows expander tools to your purchase, Part# 90360. NOW INCLUDES MAINTENANCE FREE, PERMANENTLY GREASED, SEALED GIMBAL BEARING AND SET SCREW TO REPLACE GREASE FITTING PASSAGE.
Manufacturer: GLM Products, Inc.
Sierra Part Number: 18-2601
Mercury Part Number: 30-803097T1