The Peterbilt 379, 386, and 389 12 Inch Seat Base Adapter is a practical and versatile solution for Seats Inc. Legacy Lo Seats. With a sleek gloss black finish, this adapter is available in chrome or billet aluminum, offering options to suit your preference. Designed to fit most Peterbilt 379, 386, and 389 Seats Inc Legacy Lo Seats built after July 1st, 2018, this adapter provides a secure and comfortable seating experience. Its compatibility and durability make it an ideal choice for those seeking a reliable seat base adapter.