The Peterbilt 579 12 inch Sears Atlas Seat Base Adapters are a practical and beneficial addition to your Peterbilt 579 truck. Available in chrome or billet aluminum, these adapters are designed to fit most Peterbilt 579 Sears Atlas seating. With a yellow finish, they not only enhance the aesthetics of your truck but also provide a secure and comfortable seating experience. Each adapter is sold individually, making it easy to customize your seating arrangement. Upgrade your truck with these reliable and durable seat base adapters for a more comfortable and efficient driving experience.