Rollover to Zoom 



The 50 Series Big Block Muffler is our largest and quietest muffler made for tow vehicles, full size trucks, large SUV's and RV's/Motorhomes. This muffler is made for more than just big Cubic Inch engine applications and has a very large resonance tuning chamber to almost completely reduce interior resonance in large cab vehicles and enough case volume to handle engines under heavy loads. Significant improvements in mileage, torque, and Horsepower are to be expected from this muffler, as well as decreased engine heat and wear. Mufflers utilize Flowmaster's patented Delta Flow technology and feature excellent power characteristics with good sound reduction qualities and are constructed for race applications that have strict decibel level requirements to adhere to.

  • Shape - Oval
  • Inlet Position - Dual
  • Inlet Diameter - 3 in.
  • Outlet Position - Dual
  • Outlet Diameter - 2-1/2 in.
  • Overall Length - 28 in.
  • Finish - Satin
  • Case Diameter - 12 X 5 in.
  • Color - Gray
  • Case Length - 22 in.
  • Material - Aluminized Steel
  • Wall Type - Single Wall
  • Internal Construction - Three Chambered
  • 2001-2004 Chevrolet Silverado 2500 HD
    ColorAs Shown

    FLOWMASTER 530504 Exhaust Muffler

    Write a Review

    Free Shipping over $35 and Free Returns 

    $1.49 off if you opt out of free returns