Listed gear-ratio data for 2015 Mariner 150 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
2015 Mariner 150 HP
Listed ratio values: 1.87:1, 1.92:1, 2.08:1
| Model | Gear ratio |
|---|---|
| 150 OptiMax | 1.87:1 |
| F150 EFI FourStroke | 1.92:1 |
| Verado 150 L4 | 2.08:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.