The Yamaha Cylinder Head Cover Oil Bung Plug 4KB-11186-00 is a high-quality aluminum cover bung plug designed for Yamaha ATVs such as Kodiak, Big Bear, and Wolverine models. Made in Japan, this genuine Yamaha part is crucial for maintaining the engine's proper oil seal and preventing leaks. With this product, you can rest assured of a secure and reliable connection for your Yamaha ATV's cylinder head cover.