Abstract: A fuel tank with a baffle disposed therein is disposed at an intermediate place between the two ends of the tank is provided for preventing noise caused when fuel shifts in the fuel tank from one end to the other. In a preferred embodiment, the baffle is constructed of a fiberglass filter media material. Also in a preferred embodiment, the baffle is collapsible so that it can be inserted into an opening in the top of a plastic fuel tank and then allowed to return to its original larger height whereby it will be held by a biasing pressure in a desired position within the tank.