Traffic
Traffic: the engine model and the diagram are the search
Marine part searches usually contain an engine model, sometimes a serial range and often a component named from a parts diagram rather than from a catalog. Owners learn the vocabulary from the manufacturer's own documentation, so a store using different words is invisible to them. The traffic lever is building pages around the same structure the owner is already looking at: a page per engine family, a page per assembly within it, and part pages that list the models and serial ranges they cover as text. Boat model pages are the second family, since hull-side components such as pumps, hardware and electronics are searched by boat rather than by engine.
