Type: Genuine
Brand: MERCURY MARINE
Description: UPPER GEAR KIT
Mercury P/N: 43-18411A4
Application:
For use w/ heavy duty 1.50 gears only. The HD 1.50 drive gear has a stepped
bearing surface requiring the use of a special bearing kit having 2 different I.D.
bearings.
Fits MR, Alpha One & SS (1984‑1990)
If you are unsure of the application, please enter the make, model and serial number information in the comments section of the checkout.