Description
Sierra 18-3782 Prop Nut Kit Replaces 6G5-W4599-00-00 is a marine-grade aftermarket replacement kit designed for Yamaha outboard applications ranging from 115 HP to 300 HP (1984–Newer). It is engineered to meet or exceed original equipment manufacturer (OEM) specifications and serves as a direct interchange for several factory parts.
Kit Contents
The kit provides all the essential hardware required to securely mount a propeller to the outboard prop shaft:
- Prop Nut (Part #18-3726)
- Prop Spacer (Part #18-4274)
- Washer (Yamaha Outboard equivalent: #92990-18200-00)
- Cotter Pin (Part #18-3735-9)
Compatibility & Interchanges
This hardware kit is highly compatible across multi-cylinder Yamaha configurations, fitting virtually all Yamaha V4 and V6 outboard motors. It explicitly interchanges with the following part numbers:
| Manufacturer | Part Number Cross-Reference |
| Yamaha OEM | 6G5-W4599-00-00, 6G5-WPROP-00-KT |
| GLM | 21251 |
| Mallory | 9-73992 |
