Listed gear-ratio data for 1998 Mercury 250 HP EFI / XB 3.0L outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
1998 Mercury 250 HP EFI / XB 3.0L
Listed ratio values: 1.75:1
| Model | Gear ratio |
|---|---|
| CURRENT-LEGACY | 1.75:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.