Screw w/washer. Jet Chamber Cover. Mikuni 40 PHH Performance Carburetor. #N115.106-RS. New, smaller diameter head (8.75mm). Replaces item #1 and #2 in exploded view. Zinc Chromate finish. Replacement Alternative for Discontinued Mikuni screw #N115.106 (#1) and washer #BVZ23/40 (#2). One #N115.106-RS screw w/washer required per carburetor.

Also fits some Mikuni / Solex PHH Carburetors

Authorized Mikuni Distributor