Rack and Pinion Gears are designed to render quality performance. These gears function to convert rotational motion into linear motion. They units which are commonly found in the steering mechanism feature a variable rack so as to improve vehicle response and steering ability especially at high speeds. These facilitate easy installation and are maintenance free.Specifications Steering Box Style - Front steer Steering Box Type - Power assist Steering Box Material - Cast iron Steering Box Finish - Natural Mounting Bracket Included - No Pitman Arm Included - No Has 36-spline output shaft. Make - Ford Model - Excursion, F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, F-550 Super Duty Year - 1999 - 2005 - SKU: KSAO6348