This muffler lasted 4 months. I bought this muffler in October and installed it on my Jeep Wrangler. Installation went smoothly and sounded fine until January when I noticed a loud noise. I visited my mechanic who informed me that my muffler was falling apart and that I should return it. Further examination showed that the muffler fell apart from the inside and made a loud bang. It only lasted 110 days and is out of warranty. Buyer Warning!