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817603 - Flowmaster Force II Cat-back Exhaust System - default Image
817603 - Flowmaster Force II Cat-back Exhaust System - additional Image
817603 - Flowmaster Force II Cat-back Exhaust System - additional Image
2011-18 GM Silverado/Sierra 1500 6.2L - Force II Cat-back Exhaust System 817603YouTube Button

Flowmaster Force II Cat-back Exhaust System

Fits 2011 to 2018 Chevrolet and GMC 1500 Series trucks with a 6.2L V8 engine, including Sierra and Silverado. Designed for Crew Cab Short bed and Extra Cab Standard bed models with a 143 inch wheelbase.

PART# 817603

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Fits 2011 to 2018 Chevrolet and GMC 1500 Series trucks with a 6.2L V8 engine, including Sierra and Silverado. Designed for Crew Cab Short bed and Extra Cab Standard bed models with a 143 inch wheelbase.

Overview

This stainless steel bolt on exhaust system for the 2011 to 2018 GMC and Chevrolet 1500, crew cab / short bed and extra cab / standard bed with 6.2L engine uses Flowmaster's 50 Series Big Block muffler for a muscular exterior sound and 3.50 in. mandrel bent tubing throughout. The system features a polished, 4.00 in. embossed stainless tip and delivers noticeable performance gains while offering a moderate sound level inside and out. The system is a true bolt on with an OE style ball flange connection and it utilizes the factory exhaust hangers for easy at home installation. Flowmaster's lifetime limited warranty protects your investment for the life of the vehicle.

Features:

  • Stainless Steel Construction
  • Dyno Tuned For Maximum Performance
  • Delta Flow Technology
  • Flowmaster Quality

Specs

2WD/4WDRWD/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 LevelModerate Sound
System TypeCat-back System
Tip Diameter (in)4
Tip Quantity1
Tubing Diameter (in)3.5
Part Number817603

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 to 2018 Chevrolet and GMC 1500 Series trucks with a 6.2L V8 engine, including Sierra and Silverado. Designed for Crew Cab Short bed and Extra Cab Standard bed models with a 143 inch wheelbase.

Applications

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