Berryman (0996-4PK) Chem-Dip Carburetor and Part Cleaner - 0.75 Gallon, (Pack of 4) Fast-acting immersion cleaner for all metal parts Use for cleaning carburetor and transmission components, valves, and other small, hard-to-clean engine parts Removes gum, varnish, sludge, carbon and grease Safe on plastic and rubber Non-chlorinated and non-flammable formula is VOC compliant in all states