Upgrade your Peterbilt 378, 379, or 379X with these high-quality 4-inch cowl panels. Made of durable 304 stainless steel, these panels are available blank or with 4 P3 LED lights. The LED lights come in amber with either an amber or clear lens. Sold as a pair, these cowl panels not only enhance the appearance of your truck but also provide practical benefits such as increased visibility and safety on the road. Upgrade your Peterbilt today with these reliable and stylish cowl panels.