Product Details: The Power Products 48" Round Muffler is designed to provide excellent noise reduction for a quieter operation. It features a 5" inlet diameter and 9" body diameter with a side inlet/end outlet configuration type. This muffler is manufactured with high-quality materials for durability and longevity and helps to improve engine performance by reducing back pressure. It also offers increased fuel efficiency and reduced emissions, making it an ideal choice for any vehicle. FleetPride is your First Click in Heavy Duty®.