1988-1993 Buick Regal. Notes: Disc Brake Rotor. Conventional Or Drum-In-Hat Type Rotor: Conventional. Directional or Non-Directional Brake Surface: Non-Directional. Position: Rear. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.