If you're building a custom dirt bike or ATV, or just need a replacement gas cap with a vent, this universal unit is a great option.
It's designed to fit a variety of Yamaha off-road machines and likely many others.

It includes the cap itself, a valve, and a breather hose.\n\nThe cap is made from aluminum with a nice anodized surface finish, so it looks good and resists corrosion.

The vent hose is made of flexible silicone.

It's a complete setup to replace a broken or missing cap, or to add a proper vent to a custom tank.\n\nIt's an unbranded part, but it's built for the job.

Universal fit means you may need to adapt it to your specific tank, but it's a great starting point.

Get your fuel system breathing right!\n\nBrand: Unbranded\nType: Fuel Tank Cap with Vent Valve & Breather Hose\nMaterial: Aluminum (Cap), Silicone (Hose)\nFinish: Anodized\nFitment: Universal (Fits many Yamaha ATV/Dirt Bikes)