This gasket fit like it came from the factory. On this particular 3hp Tecumseh motor with a horizontal shaft, the intake manifold is a curved, cast pipe that offsets the intake port so it comes out from under the gas tank. Be sure you're looking that carburetor end of the manifold and not the intake port end of the manifold. There are 2 different shaped gaskets. This gasket fits between the carb and the manifold. Jack's Small Engines in my goto place for parts.