Description
SIERRA Mercury/MerCruiser Alpha Water Pump Impeller – 18-3017
Water-pump impeller for MerCruiser #1/R/MR/Alpha drives through serial 0D494568 and multiple Mercury/Mariner outboard/raw-water-pump applications. Sierra designs the replacement around the specified OEM pump geometry and interchange references.
- Application: MerCruiser #1/R/MR/Alpha drives through serial 0D494568 and multiple Mercury/Mariner outboard/raw-water-pump applications
- 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: 47-803631T, 47-F694065; GLM: 89840; Mallory: 9-45306; Mercruiser Stern Drive: 47-30221, 47-65960, 47-89984, 47-89984T4; Mercury Marine: 47-30221, 47-65960, 47-85460, 47-89984, 47-899842, 47-899844, 47-89984T3, 47-89984T4
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
- Hub: Brass insert
- Key: Application-dependent; verify pump configuration
Interchange / Replaces
- Chrysler/Force/US Marine: 47-803631T, 47-F694065
- GLM: 89840
- Mallory: 9-45306
- Mercruiser Stern Drive: 47-30221, 47-65960, 47-89984, 47-89984T4
- Mercury Marine: 47-30221, 47-65960, 47-85460, 47-89984, 47-899842, 47-899844, 47-89984T3, 47-89984T4
Related Products
- Upsell / complete repair: SIE-18-3251 | SIE-18-3217
- Cross-sell / alternative: EMP-47-00001
- Relationship notes: 18-3251 and 18-3217 are stocked Sierra pump-service kits using this impeller. EMP 47-00001 is a verified direct alternative.
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