The DFC brake wheel cylinder for 1991–2005 Buick Park Avenue (rear) is a replacement hydraulic cylinder for rear drum-brake applications across the stated Park Avenue years. It restores the hydraulic action that moves brake shoes and helps correct leaks or worn seals, providing a practical option when servicing rear drum brakes on compatible Park Avenue models.
DFC 91-05 Buick Park Avenue Rear Brake Wheel Cylinder