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Flowmaster Exhaust Chevy Silverado / GMC Sierra 1500 HD 6.0L (01-03) 3.5" Catback- American Thunder 17350
Flowmaster Exhaust Chevy Silverado / GMC Sierra 1500 HD 6.0L (01-03) 3.5" Catback- American Thunder 17350
Flowmaster Exhaust Chevy Silverado / GMC Sierra 1500 HD 6.0L (01-03) 3.5" Catback- American Thunder 17350
Flowmaster Exhaust Chevy Silverado / GMC Sierra 1500 HD 6.0L (01-03) 3.5" Catback- American Thunder 17350

Flowmaster Exhaust Chevy Silverado / GMC Sierra 1500 HD 6.0L (01-03) 3.5" Catback- American Thunder 17350

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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 1500 HD 6.0L (2001, 2002, 2003)
  • Fits 2/4 wheel drive models with crew cab/short bed configuration

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: Moderate
  • System Type: Cat-back
  • Tip Diameter (in): 4
  • Tip Quantity: 1
  • Tubing Diameter (in): 3.5
  • UPC: 700042018024
  • California Proposition 65 Chemical Name: Chromium (hexavalent compounds) / Nickel (Metallic)
  • California Proposition 65 Required: Yes
  • Part Number: 17350

    Product Description

    For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Force II® cat-back exhaust system provides, the S.O.S. (Single out side) systems are the perfect choice. The 3.00-inch mandrel-bent aluminized steel tubing flows into a large case dual inlet 50 Series™ Big Block performance muffler that delivers a deep moderate exterior tone while retaining a mild to moderate interior tone. The 3.00-inch tailpipe uses the factory hanger locations for an easy installation and is finished off with a large 3.50-inch polished 304 stainless steel tip. This system is best suited towards customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. 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 is covered by our 3-year Limited Warranty.


    • Includes Hangers and Hardware for an Easy Installation
    • Mandrel-bent 16-gauge Aluminized Steel Tubing
    • Large 3.50-inch Polished 304 Stainless Steel Tip
    • 70 Series Big Block II Performance Muffler
    • Mild to Moderate Exterior Exhaust Tone
    • Dyno Tuned for Maximum Performance
    • Includes a 3-year Limited Warranty
    • Uses the Factory Hanger Locations
    • Minimal Interior Sound
    • Easy Installation

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

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      Prop 65 Warning WARNING: Cancer and Reproductive Harm -

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

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