- The Power Steering Rack is a link between the steering wheel and the inner tie rods. The power steering rack makes it easy for you to steer your vehicle in the right direction. The rack and the pinion is confined in a metal tube. The ends of the rack protrude from the sides of the tube and are connected to a rod called the tie rod. In a power steering system, the rack has a cylinder with a piston. There are two fluid channels, one on either side of the piston.