Yamaha/Mariner 6–8 HP Impeller – Durable 6-Blade Cooling Element

This Yamaha/Mariner 6–8 HP impeller is engineered to meet manufacturer specifications, ensuring reliable cooling for your small outboard engines. It is compatible with Yamaha 6 HP and 8 HP two-stroke models, as well as the equivalent Mariner engines (from the era when Mariner utilized Yamaha technology). Featuring a 6-blade design made of flexible neoprene, the impeller drives a strong flow of water through the cooling system, keeping the engine cool even at high RPM or in hot weather.

The durability of the material guarantees a long service life – the neoprene won’t harden or crack with prolonged use in saltwater or freshwater. Installing the impeller is quick thanks to its precise match to the original dimensions (this model replaces Yamaha OEM part 662-44352-01-00). There’s no need for adjustments or modifications: simply remove the old impeller and slide in the new one. Regular inspection and replacement of the impeller (every 1–2 seasons, depending on use) will ensure your Yamaha/Mariner engine runs at optimal temperature and is safeguarded against damage.

The Yamaha/Mariner 6–8 HP impeller is favored by owners of small motorboats, fishing skiffs, and auxiliary craft. 6HP and 8HP engines are commonly found on small inflatables, yacht tenders, or as backup/kicker motors on larger boats. In these applications, a consistent and reliable flow of cooling water is crucial – and this impeller delivers exactly that. Whether you’re using your engine for short coastal hops or longer outings, you can count on efficient cooling. It’s recommended to always have a spare impeller on hand, especially when venturing far from shore, where a timely swap can save your day on the water.

• Improved Yamaha Cooling: Specifically designed for small Yamaha engines, this impeller enhances water circulation and maintains stable engine temperature.
• Mariner Compatibility: Suitable for Mariner 6HP and 8HP models (built with Yamaha components), providing an OEM-quality replacement solution.
• Engine Safety: Shields the engine from overheating during sustained high RPM operation – critical for avoiding piston and cylinder damage.
• Extended Engine Life: By reducing thermal stress on the engine, the impeller contributes to longer motor life and less frequent repairs.
• All Waters Ready: Built to perform in both salty marine environments and fresh water lakes – the material resists corrosion and abrasive particles.