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Flowmaster 817328 - Flowmaster American Thunder Exhaust Systems - Truck/SUV

Flowmaster 817328 - Flowmaster American Thunder Exhaust Systems - Truck/SUV

Flowmaster#389-817328

American Thunder Cat-Back Exhaust System
  • 2001-04 GM Silverado/Sierra HD 6.0L/8.1L
  • 3.5" Tubing, 4" Polished SS Tips
  • Single Side Exit
  • 50 Series Big Block Muffler
  • 409S Stainless Steel

    Flowmaster 817328 - Flowmaster American Thunder Exhaust Systems - Truck/SUV Details

    GM Trucks

    2001 to 2004 Chevrolet and GMC trucks on a 3/4 Ton or 1 Ton HD chassis with a 6.0L or 8.1L engine, fits Extended Cab and Crew Cab models.

    Finally, an exhaust system as durable and strong as the trucks it's designed to fit. Flowmaster proudly introduces the 409S stainless steel 817328 Cat-back exhaust for the 2001-2004 Chevy and GMC 2500HD extended-cab and crew-cab trucks equipped with the 6.0 and 8.1 liter V8s. Featuring dual 3.0" inlets and a single 3.5" mandrel-bent tailpipe with a 4.00"polished T304 logo embossed stainless steel tip. This American Thunder system with its 50 Series Big Block muffler gives your truck an aggressive tone inside and out. Detailed step-by-step instructions and all necessary hardware are included to allow an easy, at-home installation. Like all Flowmaster 409S stainless products, the 817328 carries a limited lifetime warranty, to ensure this is the last exhaust your truck will ever need.

    Key Features:

  • 409S Stainless Steel Construction for Durability
  • Mandrel Bent Tubing for Maximum Power
  • Aggressive Sound Level
  • Improves Torque, Horsepower and Throttle Response
  • Lifetime Warranty

  • Flowmaster 817328 - Flowmaster American Thunder Exhaust Systems - Truck/SUV

    These systems are designed with the latest technology to provide the best possible performance from a Flowmaster muffler. Flowmaster's systems will both improve acceleration and passing power, as well as increase fuel mileage. Every Flowmaster system is individually engineered and dyno-tested for each application. All tubing is mandrel bent for the best possible exhaust gas flow, and choose from fabricated 409S stainless steel or aluminized steel tubing for corrosion resistance. Made in USA.

    Bolt this system on and let people know you've arrived. American Thunder by Flowmaster will deliver the aggressive tone you want and the performance you demand from Flowmaster. Each Flowmaster exhaust system comes with Performance Flowmaster Muffler(s), all pipes with hangers attached, clamps and mounting hardware and detailed installation instructions.

    Dual Rear Exit Exhaust Systems (DOR)
    The DOR systems are designed for the person who wants that custom look of a dual exhaust on a late model vehicle that came with a factory single exhaust. These systems feature mandrel bent 16 gauge tubing, either weld-on or flanged inlet pipe/pipes, specially tuned muffler, clamps, and hangers for that aggressive sound of a dual exhaust system.

    Dual Side Exit Exhaust Systems (DOS)
    The DOS systems are designed for the person who wants that custom look of a dual exhaust on a late model vehicle that came with a factory single exhaust. These systems feature mandrel bent 16 gauge tubing, either weld-on or flanged inlet pipe/pipes, specially tuned muffler, clamps, hangers and stainless steel exhaust tips for that aggressive look and sound of a dual exhaust system. Recommended for towing applications.

    Single Side Exit Exhaust Systems (SOS)
    The SOS system is for the person who wants a subdued, but custom look, with all the benefits of a Flowmaster exhaust system. These systems feature mandrel bent 16 gauge tubing, either weld-on or flanged inlet pipe/pipes, specially tuned muffler, clamps, hangers and stainless steel exhaust tip exiting in the factory location out the side behind the rear tire of the vehicle.

    Single Rear Exit Exhaust Systems (SOR)
    The SOR system is for the person who wants a subdued but custom look, with all the benefits of a Flowmaster exhaust system. These systems feature mandrel bent 16 gauge tubing, either weld-on or flanged inlet pipe/pipes, specially tuned muffler, clamps, hangers and stainless steel exhaust tip exiting in the factory location either under the bumper, or through the valance at the rear of the vehicle.

    Muscle Truck Exhaust Systems (DOSS)
    The DOSS systems are designed to give your late model truck the custom look of a NASCAR race truck. These ''Muscle Truck'' systems feature mandrel bent 16 gauge tubing custom bent to fit your vehicle, either weld-on or flanged inlet pipe/pipes, specially tuned muffler, clamps, hangers and stainless steel exhaust tips exiting in front of the rear wheel for that aggressive look and sound of a dual exhaust race vehicle.

    JEGS Easy Kits are designed by JEGS Professionals to help you get all the performance parts you need.

    Flowmaster 389-817328

    Inlet Size (in.)
    3.5
    Outlet Size (in.)
    3.5
    Material
    Stainless Steel
    Exit Position
    Single Side
    Exhaust Type
    Single
    Exit Style
    Straight
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