Carburetor float bowl. If the carburetor is leaking, one of the float bowl gaskets may be worn out.
Carburetor rebuild kit. Briggs & Stratton recently eliminated carburetor nozzles from various kits as a running change. Carburetor nozzles are still available for purchase by using your model/type number if needed.
Float Valve, 8-12.5 HP Vertical
Needle Valve, 11.5, 12.5 & 13 HP (28 CID) Vertical
Choke shaft kit