For Peterbilt 378 and 379 trucks, 4-inch wrap-around cab and cowl panels with light cutout options serve as a high-quality stainless steel exterior trim solution that combines corrosion-resistant styling with ready-made openings for marker or accent lights. Made in the USA and sold as matched driver and passenger pairs, these wrap-around panels offer several cutout configurations-including 10 round 2-inch light holes or eight elite, elite mini, or universal light cutouts-each spaced to fit common lighting layouts and reduce the need for extra drilling during installation. Because they are premium aftermarket replacements, they provide a more attractive and durable alternative to worn or damaged original panels while including a warranty against defects in workmanship and materials from the date of purchase. Panels ship directly from the manufacturer and may arrive separately from other order items, so plan accordingly when coordinating upgrades. Before ordering, check fitment for your specific Peterbilt 378 (1988-2007) or Peterbilt 379 (1987-2007) to ensure compatibility and alignment with your truck's cab and preferred lighting design.