A cam angle mounting structure includes a cylinder head, a sensor bracket and a head cover. The cylinder head is configured and arranged to rotatably support a camshaft. The sensor bracket is configured and arranged to support a cam angle sensor. The sensor bracket is mounted on the cylinder head with the sensor bracket contacting the cylinder head. The head cover is non-rigidly mounted on the cylinder head and the sensor bracket via at least one gasket to cover a top opening of the cylinder head with a space being formed around the at least one gasket between the head cover and the cylinder head and between the head cover and the sensor bracket.