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Flowmaster 70 Series Big Block II Dual In/Dual Out Oval Muffler; 2.25-Inch Inlet/2.25-Inch Outlet (Universal; Some Adaptation May Be Required)

Item HG60979
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      Product Information

      Features, Description, Q&A, Specs & Installation

      Features & Specs

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      • Body Height 5.00 In
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      • Body Length 22.00 In
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      • Body Material Aluminized Steel
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      • Body Width 10.00 In
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      • Finish High-Temperature Paint
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      • Inlet Connection Slip-Fit
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      • Inlet Diameter 2.25 In
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      • Inlet Inside Diameter 2.25 In
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      • Inlet Location Dual
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      • Inlet Outside Diameter 2.38 In
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      • Inlet Quantity 2
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      • Inlet Type Clamp-On, Weld-On
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      • Mount Type Uses New Hangers Not Included
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      • Muffler Series 70 Series Big Block
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      • Muffler Type Chambered
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      • Outlet Connection Slip-Fit
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      • Outlet Inside Diameter 2.25 In
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      • Outlet Location Dual
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      • Outlet Outside Diameter 2.38 In
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      • Outlet Quantity 2
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      • Sound Level Mild
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      • Shape Oval
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      • Sub Category Mufflers
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      • Tunable No
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      • Category Exhaust
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      • Grade Type Performance
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      • Emission Code 5
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      • Universal Or Specific Fit Universal
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      • Fits Universal; Some Adaptation May Be Required; Adapters Needed For OEM Exhaust
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      Description

      Performance Muffler. The Flowmaster 70 Series Big Block II Dual In/Dual Out Oval Muffler with 2.25-inch inlet and outlet is engineered to enhance horsepower, torque, and engine efficiency while delivering a mild exterior exhaust tone. It is suitable for trucks, SUVs, motorhomes, tow vehicles, and high-performance street cars where space allows. The muffler effectively reduces interior resonance, providing a comfortable driving experience along with improved exhaust sound control.

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      Construction and Appearance. Constructed from heavy-duty 16-gauge aluminized steel, this muffler features a high-temperature paint finish that resists corrosion and heat damage. It incorporates Flowmaster’s Delta Flow® technology within an enlarged oval case, optimizing sound control, durability, and overall performance while offering a sleek black appearance.

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      Installation. Installation requires basic mechanical skills using slip-fit inlet and outlet connections designed for clamp-on or weld-on mounting. The muffler uses new hangers which are not included. Some adaptation with adapters may be needed to fit OEM exhaust systems, though no drilling is typically required.

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      Application. This muffler offers a universal fit and requires some adaptation during installation, including the use of adapters for OEM exhaust systems. It is not a direct bolt-on part and is best suited for those experienced with modifying exhaust components for custom fitment.

      Flowmaster 524704

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      4.7

      Reviews of Flowmaster Exhaust Products (500+)

      Questions & Answers

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