Aisin is the number one original equipment manufacturer of water pumps in the world. Aisin's advanced design produces water pumps with smooth coolant flow channels, efficient rotors, ball bearings, and carbon ceramic mechanical sealing for optimum cooling performance and longevity. Each water pump is crafted from all new, not remanufactured, components that feature upgraded design and materials enhancements to ensure top performance. Water pump construction materials have been carefully selected for their resistance to common water pump killers - rust, corrosion, and coolant scaling. Aisin is a leader in the development and production of high-quality original equipment matched components and systems for the automotive industry.