Mercury / Mariner Gearcase Assembly
Fits Mercury or Mariner 200 / 225 / 250 HP 3.0L OptiMax/DFI outboards (s/n 1B504988 and below).
Black
1.75 Gear Ratio
12 pinion teeth
13-spline driveshaft
MerCruiser OEM |
Aftermarket | Shaft (inch) |
Rotation |
1623-859399T13 | AM1623-859399T13 | 20 | Standard (RH) |
1623-859399T14 | AM1623-859399T14 | 25 | Standard (RH) |
1623-859399T15 | 30 | Standard (RH) |
|
1623-859399T16 | 25 | Counter (LH) |
|
1623-859399T17 | 30 | Counter (LH) |