The Peterbilt 388 and 389 2007 and newer air cleaner support box is a practical and stylish addition to your truck. Available in polished stainless steel or paintable black stainless steel, this support box is designed for a strapless look and comes blank with no lights. Sold in pairs, it fits most Peterbilt 388 and 389 2007 and newer models. Upgrade your truck with this durable and sleek air cleaner support box for a modern and polished appearance.