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Flowmaster American Thunder Cat-back Exhaust System

2001-2004 Chevrolet Silverado, GMC Sierra 2500HD/3500HD with 6.0L or 8.1L engine. (see applicatations below)

PART# 17328

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$546.00   Suggested Retail
$490.95   Your Price
Estimated shipping date: 12/04/2020
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Aggressive sound

Overview

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 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.

Features:

  • 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

Specs

2WD/4WD2WD/4WD
BrandFlowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionSingle Side Exit
Heat ShieldNo
Inlet Diameter (in)3
Inlet PositionDual
MaterialAluminized Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series50 Series Big Block
Outlet Diameter (in)3.5
Product TypeExhaust System
Single DualSingle
Sound LevelAggressive
System TypeCat-back
Tip Diameter (in)4
Tip Quantity1
Tubing Diameter (in)3.5
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number17328

Emissions

5

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.

Tech Resources

Fits 2001-2004 Chevrolet Silverado and GMC Sierra 2500 3/4 Ton and 1 Ton HD truck with 6.0L or 8.1L engine, fits 2/4 wheel drive models with extended cab or crew cab.

Applications

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