SEI lower unit good job
4 day shipping impressive, nice packaging no free t-shirt Only have 5 hours on it , but very quite and very smooth Cannot believe how smooth the shifting is. So far very happy.
Mercury 3 Cylinder and 4 Cylinder Outboard Lower Units
Gear Ratio / Cross Reference
Gear ratio | Pinion tooth count | Fwd. and Rev. tooth count |
2.07 | 14 | 29 |
2.31 (NLA Use 2.33) | 13 | 30 |
2.33 | 12 | 28 |
Shaft Measurement Example
INSTALL KIT IS AVAILABLE (New Nuts and Washers to Install the unit)
Anode Kit is Available - New Zinc Fin and Blocks that attach to the unit to prevent corrosion.
4 day shipping impressive, nice packaging no free t-shirt Only have 5 hours on it , but very quite and very smooth Cannot believe how smooth the shifting is. So far very happy.
It was a snap to install. My mercury 2002 125hp runs quiet and smooth with better hole shots and smooth positive shifts. Just make sure everything is in neutral when installing, and line up shift linkage, and water pump. And then the best Part, it was cheaper than a rebuild.