A propeller nut with tab washers for the listed Mercury/Mariner and MerCruiser applications — Sierra Marine part 18-3701.
- The outboard listing covers 75 HP and above but excludes the 225EFI four-stroke; match the exact drive and propeller hardware before fitting.
Key Features
- Suitable for marine applications.
- Limited 2 Year Warranty.
Specifications
| With Nuts |
Yes |
| With Tab Washers |
Yes |
| Quantity |
Single |
Fitment & Compatibility
| Compatibility |
Mercury/ Mariner 75 HP+ Outboards (Except 225EFI 4-Stroke) Mercruiser Alpha One/ Bravo Drives |
Part Identification
| Brand |
Sierra Marine |
| Manufacturer Part Number |
18-3701 |
