The Mikuni genuine metal tip needle valve assemblies are the best replacement parts for your leaking carburetor.  The VM15/172 metal tip needle valve assemblies fit the VM16, VM18, and VM20 carburetors.  The set includes a metal tip needle, screw in type needle valve seat, and sealing washer.  Available in various sizes from #1.5 to #2.0 in order to match up to the fuel flow characteristics of your engine. 
 

These needle valve assemblies include the sealing washer, no one else includes the sealing washers!


Please feel free to contact us with any additional questions or requests, we are available by direct line, IM, or email. We are available for tuning and setup questions as well as continuing product support after the sale.