Listed gear-ratio data for 2014 Nissan 40 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
2014 Nissan 40 HP
Listed ratio values: 1.85:1, 2.08:1
| Model | Gear ratio |
|---|---|
| NS40D2 | 1.85:1 |
| NSD40B2 | 1.85:1 |
| NSF40A | 2.08:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.