CATEGORIES HOMEBriggs and Stratton EnginesFlathead EngineOEM PartsCarburetor Assembly Main Jet, Flathead Item Number: 55509 Price: $2.65 Add to Cart Description This is a Briggs OEM main jet for the pulsa jet carburetor. This jet is stock size for gas engines. Accessories Main Jet and Needle, Flathead Sealing Washer, Flathead Carburetor Pick Up Tube, Short, Flathead