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.Automotive Item Grade: High PerformanceBody Height: 5.000 in.Body Length: 18.000 in.Body Width: 10.000 in.Color: BlackFitment: UniversalInlet Connection Type: PipeInlet Diameter: 3.500 in.Inlet Inside Diameter: 3.500 in.Inlet Outside Diameter: 3.500 in.Inlet Position: OffsetInlet Type: Single OffsetMain Piping Diameter: 3.500 in.Material: Aluminized SteelMount Type: Uses New Hangers (Not Included)Muffler Series: 50 Series HDMuffler Type: ReflectionOutlet Connection Type: PipeOutlet Diameter: 3.500 in.Outlet Outside Diameter: 3.500 in.Outlet Position: OffsetOutlet Type: Single Offset OutletOverall Length: 23.000 in.Shape: OvalSound Level: ModerateTip Quantity: 0Title: Flowmaster 953558 50 H.D. Muffler - 3.50 Offset In / 3.50 Offset Out - Moderate SoundWARNING CA Proposition 65: No