Impeller for Yamaha/Mariner 3 HP (Compatible with Parsun 2.5-3HP) – Replacement Water Pump Fin

The 52.322.00 impeller is suitable for the smallest Yamaha and Mariner outboards of 3 HP, as well as the Yamaha 2.5 HP four-stroke (and corresponding Parsun 2.6-3.6 HP copies). It replaces the original part (Yamaha OEM 6L5-44352-00) and restores reliable engine cooling. Small motors often run at high RPMs, which makes a healthy impeller critically important to avoid overheating.
Crafted from durable rubber, this impeller is designed to withstand continuous operation in both saltwater and freshwater. Even during prolonged low-speed use (e.g., trolling with a small dinghy or tender), the impeller will maintain a steady flow of water through the engine. Installation is straightforward and quick – simply remove the pump cover and swap out the old rotor for the new one.
Even small 2.5-3 HP engines are an important investment that should be protected. Regularly checking and timely replacement of the impeller (for instance, every spring before the boating season) will ensure your little outboard runs smoothly and efficiently. Keeping a spare impeller in your emergency kit can save you from trouble during your boating trips.

• Application: Perfect for very small boats – inflatables and rowboats equipped with 2.5-3 HP auxiliary outboards, as well as kicker motors on sailboats. The impeller provides reliable cooling during extended idling or full-throttle operation on small craft.
• Recommendation: Ideal for vessels up to around 2–3 meters in length powered by Yamaha/Mariner 2.5-3 HP engines. Replacing the impeller at least once a year or every ~50 running hours ensures your small motor won’t overheat and will serve you well for years to come.