Water Pump Impeller for Johnson Evinrude15/18HP 1953-1965 & 25/30HP 1970-197

Water Pump Impeller for Johnson Evinrude

This water pump impeller for Johnson Evinrude outboard motors maintains steady cooling water flow through the lower unit.

Overview

This water pump impeller for Johnson Evinrude is a replacement cooling component for select outboard motors. It is intended for Johnson Evinrude 15/18HP and 25/30HP powerheads, with model-year coverage from 1953-1965 and 1970-199. A worn water pump impeller reduces water pump output, so replacing it restores proper cooling.

Built For Performance

• Molded impeller blades move water through the cooling system.
• Flexible rubber construction helps maintain a tight seal inside the pump body.
• Replacement design matches the stock water pump impeller layout for Johnson Evinrude outboards.
• Supports consistent cooling at idle and higher throttle.
• Vanes flex against the pump housing to keep flow moving.

Fits These Machines

• for Johnson Evinrude 15HP (1953-1965)
• for Johnson Evinrude 18HP (1953-1965)
• for Johnson Evinrude 25HP (1970-199)
• for Johnson Evinrude 30HP (1970-199)

On-The-Job Use

• In place of a worn impeller during outboard water pump service.
• To restore coolant flow after reduced tell-tale water flow or overheating.
• On boats with Johnson Evinrude 15/18HP and 25/30HP outboards.
• During routine lower unit maintenance before the boating season.

Specs At A Glance

Good To Know

Q: How often should a water pump impeller be replaced? A: Replace the water pump impeller when coolant flow weakens or during routine outboard cooling system service. Use the model year range to confirm compatibility with the Johnson Evinrude outboard.

Q: What happens if the water pump impeller is worn? A: A worn impeller loses blade flexibility and can reduce water flow, which may cause the engine to overheat. Replacing it restores normal cooling and helps protect the powerhead.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.