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Spacers must be installed at each end of the steering gear if the car is equipped with 16" or 17" wheels, and with tires of 205 mm or more in width, see below, to avoid contact between the tires and body at full wheel lock.
The spacers also serve to reduce the force exerted on the control arm by the wheel lock limiter on the steering knuckle, reducing the level of noise which may occur at full lock. The spacers comprise part of a kit P/N 271800-5.