The Yamaha gearcase oil plug gasket is a genuine gasket for the gearcase drain and fill plugs.
The gasket prevents gearcase oil from leaking past the plug and water from entering the gearcase. Replace the gasket whenever you change the gearcase oil. Sold per piece.
Part numbers and references:
- Yamaha OEM number: 904300800300, 904300880100
Please check fitment against your engine model and model year before ordering. Genuine Yamaha part.