50 Series Big Block Muffler;Aluminized Steel;California Residents: WARNING
. Flowmaster 50 Series Big Block Muffler - 527504 Significant improvements in mileage, torque, and horsepower are to be expected from this muffler, as well as decreased engine heat and wear. Our largest and quietest muffler, the 50 Series Big Block Mufflers is made for tow vehicles, full-size trucks, large SUVs and RVs / Motor Homes.More than just compatible with big cubic inch engine applications, the 50 Series Big Block incorporates a very large Resonance Tuning Chamber to almost completely reduce interior sound in large cab vehicles and enough case volume to handle engines under heavy loads - perfect for tow vehicles.