OER Parts offers a wide selection of Foam Padding & Seat Buns for your Buick Regal. OER Parts offers Buick Regal Standard Seat Foam, Buick Regal Deluxe Seat Foam, Buick Regal Seat Burlap Set, Buick Regal Universal Seat Foam, Buick Regal Bucket Seat Foam, Buick Regal Front Split-Bench Seat Foam, and Buick Regal Rear Bench Seat Foam.