Gear Set Lower Unit for Mercury Mariner Inline 4 Cylinder 40-50 HP 2:1 Ratio

Complete Gear Set for Mercury Mariner Outboard Motors.
Fits:
Inline 4 40 HP Serial No. OC159200 & Up (1989-Up)
Inline 4 45 HP Serial No. 5531630 & Up (1986)
Inline 4 50 HP Serial No. 5531630 & Up (1980-86)

2.0:1 Ratio. Pinion Gear Has 13 Teeth and the Forward and Reverse Gears Have 26 Teeth.

Includes:
Forward Gear, Pinion Gear, Reverse Gear, Forward Gear Bearing, Shims and Pinion Nut.

Replaces the following OEM Numbers:

43-803497T1 and 43-79158T

• Only Fits Inline 4 Cylinder Engines with 13:26 Teeth