The Peterbilt 377, 379, 388, and 389 Steel Rear Frame Cover with Cutout is a practical and durable solution for enhancing your truck's rear frame. Available in 304 stainless steel or aluminum, this rear frame cover adds a touch of style while protecting your truck's frame. The stainless steel version includes a convenient cutout, while the aluminum version does not. Sold individually, this rear frame cover is a reliable and cost-effective choice for truck owners looking to improve their vehicle's appearance and functionality.