This exhaust bend features a flange at both ends, bolting to the manifold but also to a solid exhaust pipe (which in turn might be joined onto a Marine Flexible Exhaust Hose).
Most commonly found on Pre-Crossflow and early Crossflow WaterMota engines on such boats as the Freeman 22's and 26's.
The WaterMota Exhaust Bend Gasket. WaterMota Brass Nut, WaterMota Spring Washer, and the WaterMota Stud can usually be used to install the exhaust bend, and the WaterMota Pipe Connector is usually used for the engine cooling water connection.