How often should my muffler be replaced?

Generally, mufflers don’t need to be replaced or changed for a long time. Most can last 5-7 years or longer. However, certain factors can lead to premature muffler failure, such as:
• Being exposed to salt on snowy or icy roads
• Frequently hit due to speed bumps, pot holes with low clearance or other high impact obstacles
• Excessive use of custom fabrication that is not recommended by the manufacturer.