Complete genuine SU master overhaul kit for single HIF44 carburetors with overrun discs. The overrun poppet valve is built into the throttle disc and assists with preventing run on (dieseling). This kit includes everything you will typically need to overhaul the carburetor. Includes jet assembly, needle and seat, throttleshaft, disc, fasteners, throttleshaft bushes, and all gaskets and seals.
 
Does not include float, needle, or jet bearing assembly.