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817451 - Flowmaster Force II Cat-back Exhaust System - default Image
817451 - Flowmaster Force II Cat-back Exhaust System - additional Image
817451 - Flowmaster Force II Cat-back Exhaust System - additional Image
2011-19 GM Silverado/Sierra 2500/3500HD 6.0L - Force II Cat-back Exhaust System 817451YouTube Button

Flowmaster Force II Cat-back Exhaust System

2011-2019 Chevrolet and GMC 2500, 3500 HD trucks with 6.0L engine. Fits Crew cab/short bed.

PART# 817451

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Fits 2011-2019 Chevrolet and GMC 2500, 3500 HD trucks with 6.0L engine. Fits Crew cab/short bed.

Overview

This Force II Cat-back exhaust system is specifically designed for 2011-2019 GM Silverado/Sierra 2500HD and 3500HD crew cab/short bed trucks with the 6.0L engine. The emissions legal system is constructed from 3.50-inch mandrel bent stainless steel tubing flowing into a 50 Series Big Block muffler for a moderate tone inside and outside the truck. The tailpipe exits behind the right rear tire with a large 4.00-inch polished stainless steel tip. The system attaches to the factory hanger locations, making for easy installation and includes all necessary parts, hardware, and detailed instructions. Comes with our Limited Lifetime Warranty.

Features:

  • Includes Hangers and Hardware for and Easy Installation
  • 3.50-inch Mandrel bent Stainless Steel Tubing
  • Connects After Factory Catalytic Converter
  • Uses the Factory Hanger Locations
  • Moderate Exterior Exhaust Tone
  • Lifetime Limited Warranty

Specs

2WD/4WD2WD/4WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code5
Exhaust SeriesForce II
Exit PositionSingle Side Exit
Heat ShieldNo
Inlet Diameter (in)3.5
MaterialStainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series50 Series Big Block
Outlet Diameter (in)3.5
Product TypeExhaust Systems / Kits
Single DualSingle
Sound LevelMild/Moderate Sound
System TypeCat-back System
Tip Diameter (in)4
Tip Quantity1
Tubing Diameter (in)3.5
Part Number817451

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 2011-2019 Chevrolet and GMC 2500, 3500 HD trucks with 6.0L engine. Fits Crew cab/short bed.

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