Centek Industries' Vernatone muffler is the gold standard for marine exhaust system noise reduction. The most duplicated design around, Vernatone mufflers reduce back pressure and are easy to install on all above-waterline gasoline and diesel inboard engine standard exhaust systems. Various sizes and styles are available to fit just about any engine. These mufflers minimize back pressure and will not rust or corrode. Each Vernatone is made of fire retardant, self-extinguishing resins so fire is never an issue.