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2001-04 GM Silverado/Sierra 2500HD/3500HD 6.0L, 8.1L - American Thunder Exhaust 817328YouTube Button

Flowmaster American Thunder Cat-back Exhaust System

2001-2004 Chevrolet Silverado/GMC Sierra 2500/3500HD trucks with 6.0L or 8.1L engine. (See applications below)

PART# 817328

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$638.95   Suggested Retail
$517.46   Holleydays Price
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Fits 2001-2004 Chevrolet Silverado and GMC Sierra 2500, 3500 3/4 Ton or 1 Ton HD chassis with 6.0L or 8.1L engine, fits Extended Cab and Crew Cab models.

Overview

Finally, an exhaust system as durable and strong as the trucks it's designed to fit. Flowmaster® proudly introduces the American Thunder® cat-back exhaust system for 2001-2004 Chevy and GMC 2500HD/3500HD extended-cab and crew-cab trucks equipped with the 6.0 and 8.1L engines. Featuring dual 3.00-inch inlets and a single 3.5-inch mandrel-bent tailpipe that finished off with a large 4.00-inch polished T304 stainless steel tip. This stainless steel system features a 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. The system carries a Lifetime Limited Warranty to ensure this is the last exhaust your truck will ever need.

Features:

  • Includes Hangers and Hardware for an Easy Installation
  • Moderately Aggressive Exterior Exhaust Tone
  • Mandrel-bent 16 Gauge Stainless Steel Tubing
  • Connects After Factory Catalytic Converter
  • Uses the Factory Hanger Locations
  • Lifetime Limited Warranty

Specs

2WD/4WD2WD/4WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionSingle Side Exit
Heat ShieldNo
Inlet Diameter (in)3
Inlet PositionDual
MaterialStainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series50 Series Big Block
Outlet Diameter (in)3.5
Product TypeExhaust System
Single DualSingle
Sound LevelAggressive Sound
System TypeCat-back
Tip Diameter (in)4
Tip Quantity1
Tubing Diameter (in)3.5
Part Number817328

Emissions

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, 3500 3/4 Ton or 1 Ton HD chassis with 6.0L or 8.1L engine, fits Extended Cab and Crew Cab models.

Applications

Reviews

    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.

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