Replace your Keihin carburetor o-rings with only genuine Keihin parts.  The Keihin 16958-397-7710 needle valve assembly o-rings are made to higher standards and ensure only the best quality.  The Keihin o-rings are made from a rubber polymer that remains pliable even after many years of use and ensures an exact fit and proper function in all conditions.  This o-ring fits all Keihin carburetors using the 16958-397-7710 needle valve assembly o-ring.  Keihin OEM #16958-397-7710. 


The o-ring measures 9.10ID X 1.30mm thick.