New Replacement Fuel Valve Petcock Assembly for Yamaha Wolverine YFM350 atvs. Fits Years: 1995-2003. Replaces OEM: 3JN-24500-10-00 21V-24500-20-00. Features: 8mm Outlet Barb: Fits 5/16" Inner Diameter or 3/8" Outer Diameter Fuel Line. 34mm Center to Center Mounting. Replacement Valve, Gasket, O-rings, and Filters included. OFF setting: Completely shuts off gas flow when vehicle is parked. This reduces the chance of flooding during storage and travel. RESERVE setting: Allows you to access the lower portion of the gas tank when gas level is low.