The Peterbilt 379 Lower Inner Skirt is a practical and reliable product designed for Peterbilt 379 models. Made of durable aluminum, it is a direct replacement for the OEM part numbers 113-04402L (left side) and 13-04402R (right side). With pre-drilled holes and the same thickness and shape as the original, installation is hassle-free. Each skirt is primed and sold individually. Manufactured in the U.S.A., this product offers excellent quality and is available for both left and right sides. Upgrade your Peterbilt 379 with this reliable and functional lower inner skirt.