Impeller for Yamaha/Mariner 9.9-15 HP – Premium 6-Blade Water Pump Rotor

The 52.363.00 water pump impeller is specifically designed for Yamaha and Mariner outboard engines in the 9.9-15 HP range (including certain 20 HP four-stroke models). It replaces the OEM impeller (original part No. 63V-44352-01) to restore effective engine cooling, ensuring your motor runs smoothly and lasts longer. Made from high-quality rubber, this impeller resists wear, heat, and saltwater corrosion, making it durable even under heavy use.
This impeller is a direct-fit replacement for the factory rotor, seating perfectly in the pump housing with no modifications needed. It is compatible not only with Yamaha and Mariner, but also with equivalent Selva and Parsun models in the 9.9-15 HP class, providing a versatile solution across multiple brands. Replacing your impeller regularly (recommended annually or every 100 operating hours) will keep your engine running cool and prevent overheating during extended operation.
Use this impeller to restore maximum cooling performance – especially important when boating in warm waters or trolling at low speeds for long periods. Keeping a spare impeller on board is a smart practice for any boater, as it ensures you are prepared to maintain your cooling system even in remote locations.

• Application: Ideal for small fishing boats, inflatable RIBs, and runabouts powered by 9.9-15 HP outboards. The impeller provides reliable cooling for long cruises and when towing water toys.
• Recommendation: Suitable for boats around 3–5 meters in length equipped with a Yamaha/Mariner 9.9-15 HP engine (including 20 HP 4-stroke models). Replacing this impeller at regular intervals will ensure optimal engine performance throughout the boating season.