SIERRA Johnson/Evinrude Water Pump Impeller – 18-3003

Description

SIERRA Johnson/Evinrude Water Pump Impeller – 18-3003

Water-pump impeller for Johnson/Evinrude outboards using OEM 377178 / 775519. Sierra designs the replacement around the specified OEM pump geometry and interchange references.

• Application: Johnson/Evinrude outboards using OEM 377178 / 775519
• 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: Johnson/Evinrude Outboard: 377178, 775519

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
• Outside diameter: 2-1/4 in.
• Depth: 1/2 in.
• Shaft diameter: 9/16 in.
• Material: Neoprene with brass insert

Interchange / Replaces

• Johnson/Evinrude Outboard: 377178, 775519