Allpa 500208 impeller This Allpa impeller is an essential component for marine cooling water systems. Made from high-quality materials, this impeller offers reliable performance and durability in saltwater environments. The multi-blade design ensures optimal water circulation and prevents engine overheating. This impeller is easy to install and suitable for various ship engines and outboard motors. Ideal for replacing worn or damaged impellers to ensure the efficiency and lifespan of the cooling system.