Aircraft Spruce has both size gaskets, but before you spend more money do yourself a favor. Take the upper housing, the one with the inlet and outlet, remove the bail and sit it on a flat surface. make sure it sits flat on the surface an that it is not warped. you should not be able to rock it if you push down on the inlet and outlet laternately. This component has a tendency to warp due to overtightening of the bail nut and the new gasket will not seat well causing it to leak and making you think you have a bad gasket. Also check the inlet and outlet connections because overtightening of the nipples has a tendency to split the metal. You will only see the cracks when the nipple is screwed in, they close up when the nipple is removed. Both of these problems have no solution other than replacing the gascolator. Aircraft spruce also has replacement gascolators. AF N87333
