All Balls Hot Start Plunger Kit 46-2001All Balls Racing Hot Start Plungers are the perfect replacement for plungers that have seized up or become lost during carburetor rebuilds. Improperly functioning parts can cause hard starts or poor running conditions. When rebuilding the carburetor and its components, make sure you get the performance youre looking for by replacing the plunger. Kit includes all necessary parts to rebuild the hot start plunger circuit, O rings, springs, retaining nut,