The exhaust hanger helps secure the exhaust pipe to your vehicle's undercarriage. This helps to reduce the vibration and noise of the exhaust system and minimize damage to the exhaust pipe. Exhaust hangers are commonly made of rubber and can wear out or crack over time. If your exhaust hanger fails, you may notice your exhaust pipe hanging low or an increase in rattling and noise from the exhaust. It is important to replace the hanger as soon as possible to avoid more serious damage. If you need a new exhaust hanger, visit O'Reilly Auto Parts for the right replacement hanger for your exhaust system.