The Peterbilt 379 Extended Hood Side Grille Shell is a practical and reliable product designed for Peterbilt 379 127 Inch Extended Hoods. Made of polished aluminum, it offers a factory look and style. With pre-drilled holes, it is easy to install and available for both left and right sides. This grille shell is a direct replacement for OEM part numbers 13-03964m001L (left side) and 13-03964m001R (right side). Sold individually, it provides a perfect fit and enhances the overall appearance of your vehicle.