Abstract: The brush assembly includes a brush mounted at the end of an arm member which moves the brush to various locations along the car passing through the carwash. The arm member comprises a single arm assembly having an outside and inside arm connected at a pivot. A support extends upward from a base. One end of the inside arm is attached to the support, and the arm assembly pivots above and close to the base. The brush extends upward from the end of the outside arm opposite the intermediate pivot and is rotated by a motor. A fluid control system may pivot the inside arm with respect to the base and the outside arm with respect to the inside arm. The support for the arm on the base is angled and the brush is angled to assist in pivoting the arm and rotating parts of the brush along the car.