Aftermarket Mud Flaps for the Peterbilt 379 Protect your classic model's undercarriage with high-quality mud flaps - rugged, customizable solutions that protect your truck from dirt, debris, and the elements. Crafted from premium materials like stainless steel, rubber, and PVC, these mud flaps offer exceptional protection and long-lasting performance. Customize your rig with Peterbilt's signature logos, bold graphics, or sleek aerodynamic designs to make your 379 stand out on the highway. With the industry's top-selling mud flap models available, you can outfit your Peterbilt 379 with accessories that combine rugged protection and head-turning curb appeal.