Gear Set Lower Unit 13:21 Teeth for Mercruiser Mercury Outboard

Complete Lower Housing Gear Set (Forward/Pinion/Reverse) 1.62:1 ratio (13:21 teeth)
Fits:
Mercruiser Alpha One Gen II, 1996-Up.
It Replaces All Ratios Except 2.0/2.4. S/N Of 680000 and up that Use A Forward Bearing With An O.D. 3.265"
Mercury V6 225 Sea Pro (3.0L Carb) Serial No: OG245605-OG437999 (1994-1998)
Mercury V6 (3.0L Carb) Serial No: OD280813 and up
The Bearing Is a GLM21593.
Replaces 1.62:1 Ratio with 3.265" /82.93mm ID Bearings