Impeller 6H4-44352-02-00

Factory OEM parts will always have a BEST rating unless there is substantial data to prove otherwise.

Italy-made impeller with a solid brass/bronze keyed bushing and clear mold/date-dial markings, indicating good manufacturing control. It differs from the Yamaha integrated-hub geometry and lacks OEM tooling IDs, but overall construction suggests a high-quality functional substitute.

High-fidelity Taiwan reproduction that closely copies the OEM exterior features, including the 6H4/02-style molded markings and similar hub/rib pattern. Despite the close dimensional clone, the generic packaging/branding provides limited quality-control traceability and the rubber formulation is unverified compared with Yamaha.

China-made impeller with a keyed composite hub and the correct six-vane layout for interchangeability. It lacks the OEM molded identifiers and shows more generic tooling cues, so it’s a workable replacement but with lower confidence in material consistency than the Japan-made OEM part.

Taiwan-made replacement with a brass keyed hub insert and only generic mold-cavity marking, offering less OEM-style traceability. The exposed metal sleeve and different hub execution from Yamaha’s design should still interchange, but long-term rubber durability is less certain versus OEM.

We are working hard to determine a rating based on all available information, including product and manufacturing specifications.

We are working hard to determine a rating based on all available information, including product and manufacturing specifications.

We are working hard to determine a rating based on all available information, including product and manufacturing specifications.

We are working hard to determine a rating based on all available information, including product and manufacturing specifications.