Flowmaster's stainless steel 50 Series HD muffler is designed for today's heavy duty gas and diesel trucks. This muffler delivers improved performance, throttle response and mileage. The 50 HD features a deep, moderate tone with minimal interior resonance and is ideal for trucks with modified engines. This muffler is constructed of 409S Stainless Steel with a 3.5" inlet and outlet, and is covered by Flowmaster's Lifetime Limited Warranty.Warranty Information:Limited LifetimeAutomotive Item Grade: High PerformanceBody Height: 5.000 in.Body Length: 18.000 in.Body Width: 10.000 in.California Proposition 65 Chemical Name 1: Nickel (metallic)California Proposition 65 Chemical Name 2: Chromium (hexavalent compounds)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: Stainless SteelMuffler 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: 18.000 in.Shape: OvalSound Level: ModerateTip Quantity: 0Title: Flowmaster 853558 50 Series HD Muffler - 3.5 in. Offset In/3.50 in. Offset Out - Moderate SoundWARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov