The Peterbilt 379, 386, and 389 12 Inch Seat Base Adapter is a practical and beneficial product for owners of Peterbilt trucks. Available in chrome or billet aluminum, this adapter is designed to fit most Peterbilt 379, 386, and 389 Seats Inc Legacy Lo Seats built after July 1st, 2018. With its PO Blue color, this adapter seamlessly blends with the interior of your truck. Its 12-inch size ensures a secure and comfortable fit. Enhance your driving experience with this reliable and durable seat base adapter.