Impeller Johnson/Evinrude 40-60 HP – Reliable Water Pump for Mid-Range Engines

The Johnson/Evinrude 40–60 HP impeller is designed to restore and maintain optimal cooling for mid-power outboard engines commonly found on fishing boats and inflatable RIBs around 4.5–5 meters in length. This replacement part matches the original OEM impeller (part #389589/777129) with precise dimensions to fit exactly into your engine’s water pump. Featuring 6 flexible blades made of high-quality material, the impeller provides a steady flow of cooling water at both low and high speeds, thereby keeping the engine within its ideal temperature range.

The durable material composition ensures resistance to both salt and fresh water, as well as the heat stress generated during engine operation. This means the impeller can withstand long-term use without hardening or cracking. If your boat is powered by a Johnson/Evinrude 40–60 HP (especially models circa 1978–1985), replacing the impeller regularly – ideally every year or 100 running hours – is an inexpensive insurance against overheating. This impeller will help keep your motor reliable, particularly during prolonged trolling, watersports, or towing activities.

• Intended Use: Ideal for mid-range outboards on family fishing boats, small speedboats, and workboats where steady cooling performance is required
• OEM Compatibility: Cross-references with original OMC (Johnson/Evinrude) part numbers 389589, 777129, 777827 – ensuring an easy swap with no modifications needed
• Cooling Efficiency: Maintains sufficient water flow to cool the engine during high load (e.g. full throttle or hot weather) and low-speed trolling operations
• Easy Maintenance: Replacing this impeller is part of standard annual upkeep. No additional parts (gasket or key) are included, so procure those separately or reuse existing components as necessary
• Peace of Mind: With a healthy impeller installed, your 40–60 HP engine will run at proper temperature, giving you reliability and confidence during every outing