For Peterbilt 379 trucks from 1987 through 2007, the 4-inch wide cowl panels with light cutout options are stainless steel panels that provide a durable upgrade and allow you to install custom lighting where you want it. These replacement panels stand 4 inches tall, are sold as driver and passenger pairs, and include cutouts for a range of light layouts such as universal, elite, oval, round 2-inch, slotted, and elite mini patterns (lights not included). Available configurations include options like 4 Inch Wide Replacement Cowl Panels with 4 Universal Light Cutouts, 4 Inch Wide Replacement Cowl Panels with 4 Elite Light Cutouts, 4 Inch Wide Replacement Cowl Panels with 3 Round 2 Inch Light Cutouts, 4 Inch Wide Replacement Cowl Panels with 4 Oval Light Cutouts, 4 Inch Wide Replacement Cowl Panels with 5 Slotted Light Cutouts, 4 Inch Wide Replacement Cowl Panels with 4 Elite Mini Light Cutouts, and other similar variants. Made from corrosion-resistant stainless steel with a warranty against workmanship and material defects, these wide replacement cowl panels help refresh your truck's exterior while giving you flexibility in adding marker or accent lights. Because they are high-quality aftermarket parts rather than OEM, checking fitment before ordering is recommended.