An outboard's cooling system is only as good as its impeller, and when it starts to wear out, performance takes a hit. The Yamaha Impeller 67F-44352-00-00 is designed to keep water flowing smoothly through your engine, preventing overheating and ensuring reliable operation. A failing impeller can lead to reduced water pressure, rising temperatures, and potential engine damage-problems no boater wants to deal with. This OEM Yamaha replacement restores efficient cooling, so you can stay on the water without worry.. Built for Performance & Longevity:. Designed for Yamaha Outboards - Engineered for a precise fit, ensuring seamless water flow and optimal cooling.. Marine-Grade Durability - Made from high-quality rubber compounds that resist wear, swelling, and deterioration.. Prevents Overheating & Engine Damage - Maintains proper water circulation for peak efficiency.. Reliable Cooling at All RPMs - Ensures steady performance whether idling or running at full throttle.. When to Replace You