The Flint & Walling 138849 sub cartridge is a vital component for submersible pump systems, designed for optimal performance and reliability. This cartridge features a robust construction, ensuring it can withstand harsh conditions and provide long-lasting service. With precise dimensions, it fits seamlessly into compatible systems, enhancing overall efficiency. The sub cartridge is engineered to meet industry standards, ensuring compatibility with various pump models. This essential part is crucial for maintaining the integrity and functionality of your submersible pump, making it a must-have for any pump maintenance kit.