The Zoeller Pump Company Rotor and Bearing Assembly is engineered for 3-phase applications, specifically for model 4165. This assembly is constructed from high-quality materials to ensure durability and efficient operation. Designed to provide optimal performance, it features precise dimensions and a lightweight design that enhances the pump's overall efficiency. The rotor and bearing assembly meets industry standards, making it suitable for various applications in both residential and commercial settings. Upgrade your pump system with this essential component for improved reliability and longevity.