Semi-Truck Mufflers Universal

BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet/OutletConstructed from robust Aluminized Steel, this aftermarket muffler ensures durability and longevity for your vehicle's exhaust system. It comes with mounting hardware...

BESTfit 5 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler * High Quality Internal Muffler* Aluminized Steel* 16 Gauge* Dimensions- 5 Inch Diameter- 18 Inch Length* Works Well With 36 Inch Stacks* Hardware Not Included* Sold Individually* Warranty On...

BESTfit 4 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler * High Quality Internal Muffler* Aluminized Steel * 16 Gauge* Dimensions- 4 Inch Diameter- 18 Inch Length* Works Well With 36 Inch Stacks* Hardware Not Included* Sold Individually* Warranty...

BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler * High Quality Muffler* Aluminized Steel* Dimensions- 4 Inch Inside Diameter- 5 Inch Inside Diameter- 8 Inch Body Diameter- 15 Inch Body Length- 21 Inch Over All Length* Angle...

BESTfit Muffler 8 Inch Diameter * High Quality Muffler* Aluminized* Dimensions- 8 Inch Diameter- 5 Inch I.D. Inlet/Outlet- 24 Inch Length Body- 30 Inch Length Overall* Sold Individually* Warranty On Mufflers Against Defects In Workmanship & Material From...

BESTfit 9 Inch Diameter Muffler With 5 Inch Inlet & Outlet * High Quality Muffler* 9 Inch Diameter* 5 Inch Inlet And Outlet* Sold Individually* Made In The USA* Warranty On Muffler Against Defects In Workmanship & Material From Date Of Purchase.***High...

BESTfit 10 Inch Diameter Muffler With 5 Inch Inlet & Outlet * High Quality Muffler* 10 Inch Body Diameter* 44 1/2 Inch Body Length* 51 Inch Length * 5 Inch Inlet I.D.* 5 Inch Outlet I.D.* 3 Inch Inlet Tube Length* Standard Type 1* Sold Individually* Made...

High Flow Stock Muffler ReplacementThis high flow replacement type one muffler is designed to work with most engines. With a bolt in design, it easily replaces a 10 inch diameter stock muffler without increasing noise level. Studies have shown a minimum...

BESTfit Chrome Exhaust MufflerUpgrade your vehicle's exhaust system with these premium Chrome-Plated Steel Mufflers. Featuring a sturdy construction, these mufflers have a body diameter of 6 inches, along with a 6-inch inlet and outlet for optimal...

BESTfit 51.5 Inch Performance Sport Muffler * High Quality Muffler* 51.5 Inch Wide Muffler Is 1 Inch Wider Than The Standard Performance Sport * Uses Acoustic Louver Sound Dampening* Up To 50 Additional Horsepower And Improved Response* Lower Exhaust Gas...