Flowmaster 953558 - 50 Series HD Chambered Muffler

50 H.D. Muffler - 3.50 Offset In / 3.50 Offset Out - Moderate Sound Designed primarily for today's heavy duty gas and diesel trucks, this muffler will deliver improved performance, throttle response and mileage. Featuring a deeper, moderate tone with minimal resonance, it is ideal for trucks with modified engines. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.