The Peterbilt 579 12 Inch Seats Inc. Legacy Lo Seat Base Adapters are a practical solution for upgrading your seating. Available in chrome or billet aluminum, these adapters are designed to fit most Peterbilt 579 Seats Inc. Legacy Lo Seating built before July 1st, 2018. With a crystal white finish, these adapters offer a sleek and stylish look. Sold individually, these adapters provide a convenient and easy way to enhance your seating experience. Upgrade your Peterbilt 579 with these seat base adapters for improved comfort and functionality.