Engine block on fresh water system. Exhaust manifolds remain on raw water system. Some components from engine are reused. Heat exchanger painted black. Brackets and other components painted black or zinc plated.
Hose clamps all stainless.
Especially designed for the low capacity raw water pumps used on sterndrive engines. Some engines have fuel line routing and fuel filter location that must be changed slightly. Heat exchanger extends from extreme starboard side of a normal exhaust manifold towards port side clearing most high mounted power steering pumps if any. See above illustration. Plastic expansion tank mounts either on front of heat exchanger or if space is limited on vertical surface next to engine.