The OTR 4" x 13.2" Exhaust Pipe Bellows are made of durable steel for increased durability and longer service life and include all the hardware required for a complete replacement. It is designed to prevent exhaust leaks and loss of engine power, ensuring your vehicle runs smoothly and efficiently. With its easy installation and reliable performance, this bellows is the perfect choice for your vehicle. FleetPride is your First Click in Heavy Duty®.