The Peterbilt Top Tank is a durable and practical solution for your Peterbilt truck. With a sleek black finish and included gasket, this top tank is designed to fit most Peterbilt models. Sold individually, this top tank is a reliable aftermarket option with Orem and aftermarket numbers 558076 and 559132. Upgrade your Peterbilt with this top tank for a seamless and functional addition to your truck.