On a quiet side street, a driver easing a vintage hatchback into a tight parking space wrestles the wheel with both hands.

Part of a rack-and-pinion steering system, the rack is a bar parallel to the front axle that moves left or right when the steering wheel is turned, aiming the front wheels in the correct direction.

Rack Em Up! Get precision steering and durability with a power rack-and-pinion steering unit from National Parts Depot Rack-and-pinion steering is one of the Mustang’s greatest engineering refinements ...