The steering system is one of the major components in your Mercury. If your vehicle has a power steering system, then the parts contained in it will include the power steering rack, the wheel, the shaft, the gear box, the tie rods, the pinion, the piston, the pump, the pitman arm, and the coupler The main function of the power steering rack is to convert circular motion of the steering wheel into the linear motion of the vehicle. The power steering rack is made up of a cylinder which includes a piston. The Mercury power steering rack consists of two fluid ports at both the ends of the piston. Using the piston, the power steering rack aids the power mechanism of the steering system. If you find any difference in the performance of your Mercury power steering rack, you need to replace it as soon as possible. You are at the right place to get your car steering parts. Car Steering Wholesale offers you a variety of car parts that are available at wholesale prices.