Fan and radiator-cooled engines are equipped with an air-cooled exhaust manifold.
The outlet flange may be located at the end or at the mid-section of the exhaust manifold, depending upon the
installation requirements. A flexible exhaust connection or a muffler may be attached to the outlet flange. The
exhaust manifold is attached to studs located between the exhaust ports and the outer side of the two end ports
in the cylinder head. Special washers and nuts secure the manifold to the cylinder head.