SIERRA Johnson/Evinrude Water Pump Impeller – 18-3001

Description

SIERRA Johnson/Evinrude Water Pump Impeller – 18-3001

Water-pump impeller for Johnson/Evinrude outboards using OEM 277181 / 434424. Sierra designs the replacement around the specified OEM pump geometry and interchange references.

• Application: Johnson/Evinrude outboards using OEM 277181 / 434424
• 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: GLM: 89580; Johnson/Evinrude Outboard: 277181, 434424; Mallory: 9-45216, 9-45216-10

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: 2.75 in.
• Approx. thickness: 0.50 in.
• Approx. bore: 0.430 in.
• Key: Not included

Interchange / Replaces

• GLM: 89580
• Johnson/Evinrude Outboard: 277181, 434424
• Mallory: 9-45216, 9-45216-10

Related Products

• Upsell / complete repair: SIE-18-3201 | SIE-18-3202
• Cross-sell / alternative: EMP-47-00585
• Relationship notes: 18-3201 and 18-3202 are Sierra impeller kits that include 18-3001. EMP 47-00585 is a verified direct alternative.