Mac Industrial offer a wide and comprehensive solution for stainless steel exhaust systems and accessories for the Marine Industry. From off the shelf inventory products to custom manufactured parts and assemblies to order.
Marine
MAC INDUSTRIAL DIVISIONS

Marine Exhaust Solutions
- MAC MUFFLER EXHAUST SYSTEMS
- Cowl Exhaust Systems
- Stainless Steel Elbows
- Custom Cut Flanges
- Custom Stainless Steel Mufflers
- If You have a sample or a drawing we can build it...
Mac Industrial offer both Mac Muffler and Cowl Silencers which feature unique single spiral chamber designs that allows a free flow of exhaust gas throughout the entire spiral chamber.
The patented Mac Muffler design brings both cost savings as well as performance.
The benefits of the Cowl® spiral chamber are high sound attenuation, very low exhaust back pressure, and a very small package size. Typically, Cowl silencers are approximately 1/3 the physical size and 1/2 the weight of conventional cylindrical silencers of similar performance.
BENEFITS OF AN EXHAUST SILENCER
An exhaust silencer is an acoustic device that muffles noise caused by air exhausting from an engine. A silencer can reduce sound emission levels on your boat without reducing engine performance. When correctly configured a silencer can make your boat more acceptable to dockside limits.
The patented Mac Muffler design brings both cost savings as well as performance.
The benefits of the Cowl® spiral chamber are high sound attenuation, very low exhaust back pressure, and a very small package size. Typically, Cowl silencers are approximately 1/3 the physical size and 1/2 the weight of conventional cylindrical silencers of similar performance.
BENEFITS OF AN EXHAUST SILENCER
An exhaust silencer is an acoustic device that muffles noise caused by air exhausting from an engine. A silencer can reduce sound emission levels on your boat without reducing engine performance. When correctly configured a silencer can make your boat more acceptable to dockside limits.