The 55 Inch Peterbilt Replacement Resonator is a practical and reliable solution for your Peterbilt truck. Designed to fit OEM Part Number: Peterbilt M11026, this resonator is sold individually and offers a seamless replacement option. With its 55-inch size, it provides optimal performance and functionality. Upgrade your truck's exhaust system with this high-quality resonator, ensuring improved sound control and overall efficiency. Trust in this product to enhance your Peterbilt's performance and enjoy a smoother and quieter ride.