Description
SIERRA Mercury/Mariner/Force/Honda Water Pump Impeller – 18-3056
Water-pump impeller for Alpha One Gen II/Vazer and numerous Mercury/Mariner/Force/Honda outboards using 47-43026 / 8M0025709 / Honda 19210-ZW1-303-family impellers. Sierra designs the replacement around the specified OEM pump geometry and interchange references.
- Application: Alpha One Gen II/Vazer and numerous Mercury/Mariner/Force/Honda outboards using 47-43026 / 8M0025709 / Honda 19210-ZW1-303-family impellers
- Function: Circulates raw cooling water through the engine cooling system; a worn, hardened or damaged impeller can reduce water flow and cause overheating.
- Component: Flexible water-pump impeller
- Blade count: 6
- Interchange: Chrysler/Force/US Marine: 47-430262; GLM: 89630; Honda: 19210-ZW1-303; Mallory: 9-45307; Mercury Marine: 47-430261, 47-430262, 47-430264, 47-43026B2, 47-43026T2, 8M0025709; Quicksilver: 43026Q02, 47-43026T2
Verify the engine model, serial range, pump housing and original impeller number before installation. Inspect the housing, wear plate, key and gaskets at the same time; replace damaged companion parts rather than installing a new impeller into a worn pump.
Specifications
- Component: Flexible water-pump impeller
- Blade count: 6
- Approx. outside diameter: 89 mm
- Approx. width: 32.5 mm
- Approx. bore: 22.4 mm
Interchange / Replaces
- Chrysler/Force/US Marine: 47-430262
- GLM: 89630
- Honda: 19210-ZW1-303
- Mallory: 9-45307
- Mercury Marine: 47-430261, 47-430262, 47-430264, 47-43026B2, 47-43026T2, 8M0025709
- Quicksilver: 43026Q02, 47-43026T2
Related Products
- Upsell / complete repair: SIE-18-3214 | SIE-18-3147
- Cross-sell / alternative: EMP-47-01814
- Relationship notes: 18-3214 and 18-3147 are stocked Sierra water-pump kits for this impeller family. EMP 47-01814 is a verified direct alternative.

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