Listed gear-ratio data for 1995 Mercury 225 HP EFI 3.0L outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
1995 Mercury 225 HP EFI 3.0L
Listed ratio values: 1.75:1, 1.87:1
| Model | Gear ratio |
|---|---|
| 0G129222-0G437999 | 1.75:1 |
| 0G438000-UP | 1.75:1, 1.87:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.