Hitachi's Power Steering Pumps (PSPs) are the heart of the hydraulically actuated power steering system. With a cast aluminum housing to keep weight down and machined steel internals, Hitachi's PSPs ensure durability with high thermal efficiency. Precision machined surfaces reduce pressure loss and provide quieter operating characteristics. High strength internal components result in greater durability and efficiency. Designed to meet the exact needs of each specific vehicle, Hitachi's Power Steering Pumps are the premium choice.