Listed gear-ratio data for 2005 Mercury 250 HP DFI XS outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
2005 Mercury 250 HP DFI XS
Listed ratio values: 1.75:1
| Model | Gear ratio |
|---|---|
| 0T651945-0T818042 | 1.75:1 |
| 0T818043-0T997973 | 1.75:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.