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Flowmaster Exhaust Chevy Silverado / GMC Sierra 2500HD/3500HD 6.0L / 8.1L (01-07) 3.5" Catback- American Thunder 17328
Flowmaster Exhaust Chevy Silverado / GMC Sierra 2500HD/3500HD 6.0L / 8.1L (01-07) 3.5" Catback- American Thunder 17328

Flowmaster Exhaust Chevy Silverado / GMC Sierra 2500HD/3500HD 6.0L / 8.1L (01-07) 3.5" Catback- American Thunder 17328

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American Thunder® is the ‘original’ Flowmaster sound. In most cases a very aggressive sound level, American Thunder systems use various chambered mufflers to achieve the performance gains and aggressive sound that you want from your car or truck, inside and out. Available in stainless steel or economical aluminized steel, American Thunder systems are a great choice when you want to be heard.

Fitment Information

  • Chevy Silverado / GMC Sierra 2500HD/3500HD 6.0L / 8.1L (01-07)
  • 2007 Classic
  • 3/4 Ton and 1 Ton
  • fits 2/4 wheel drive models with extended cab or crew cab and with dual inlet muffler.

Emissions Compliance

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Specs & Features

  • 2WD/4WD: 2WD/4WD
  • Emission Code: 5
  • Exhaust Series: American Thunder
  • Exit Position: Single Side Exit
  • Heat Shield: No
  • Inlet Diameter (in): 3
  • Inlet Position: Dual
  • Material: Aluminized Steel
  • Muffler Part Number: Kit Only
  • Muffler Quantity: 1
  • Muffler Series: 50 Series Big Block
  • Outlet Diameter (in): 3.5
  • Product Type: Catback Exhaust System
  • Single Dual: Single
  • Sound Level: Aggressive
  • System Type: Cat-back
  • Tip Diameter (in): 4
  • Tip Quantity: 1
  • Tubing Diameter (in): 3.5
  • UPC: 700042017607
  • California Proposition 65 Chemical Name: Chromium (hexavalent compounds) / Nickel (Metallic)
  • California Proposition 65 Required: Yes
  • Part Number: 17328

    Product Description

    For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides. This American Thunder system for the 2001-2006 (2007 Classic) Chevrolet Silverado, GMC Sierra 2500HD/3500HD with 6.0L or 8.1L engine with dual inlet muffler, delivers a moderate interior tone with a deep powerful exterior tone and is suited to the enthusiast who wants their performance to be heard. The system attaches to the back of the catalytic converter with a dual inlet 50 Series Big Block muffler for a deep powerful sound without being obnoxious. Includes a large custom formed aluminum heat shield with stainless clamps and easily attaches directly to the muffler body. The custom bent 3.50-inch aluminized steel tailpipe uses the factory hanger locations for an easy installation and exits out behind the right side rear wheel which is ideal for towing. The tailpipe is finished off with a large 4.00-inch polished 304 stainless steel tip embossed with the Flowmaster logo. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and easy to follow instructions for a trouble free installation. Covered by our 3-year Limited Warranty. Check out system #817328 if you prefer a Stainless Steel exhaust system that is covered with a Lifetime Limited Warranty.


    • Includes an Aluminum Heat Shield for Rapid Heat Dissipation
    • Includes a Large 4.00-inch Polished 304 Stainless Steel Tip
    • Includes Hangers and Hardware for an Easy Installation
    • Mandrel-bent 16-gauge Aluminized Steel Tubing
    • Dyno-tuned for Maximum Performance
    • Stainless Steel Heat Shield Clamps
    • Uses the Factory Hanger Locations
    • Aggressive Exterior Exhaust Tone
    • Easy Installation

      Redline360 is an authorized Flowmaster dealer and sells only genuine Flowmaster products.

      Flowmaster Brand Logo

      Prop 65 Warning WARNING: Cancer and Reproductive Harm -

      More in this category
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      Chevy Silverado Parts
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      GMC Sierra Parts
    • Exhaust
    • See all Flowmaster parts

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