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Flowmaster American Thunder Cat-Back Exhaust System 817541

Flowmaster American Thunder Cat-Back Exhaust System 817541
Flowmaster American Thunder Cat-Back Exhaust System 817541Flowmaster American Thunder Cat-Back Exhaust System 817541Flowmaster American Thunder Cat-Back Exhaust System 817541
$1,537.99 ea
NEWARRIVING SOONEstimated Ship Date 12/10/2024 (If Ordered Today)15 Available from HOLLEY PERFORMANCE PRODUCTS as of 11/22/2024
Model: 4005364
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
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The new Flowmaster American Thunder® Cat-back exhaust system for 2011-2019 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks with 6.0L, is perfect for the person looking for a moderate to aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster®. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel 50 Series HD™ muffler and large dual 3.00-inch stainless steel mandrel bent tailpipes that can be configured to exit either dual out the sides, or dual straight out the back. The system is finished off with beautifully polished 4.00-inch stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation. Notes: Fits Crew Cab with 6.5' bed length. 153.7" wheelbase only.
Features:
  • Uses the Factory Hanger Locations for Easy Installation
  • 50 Series HD Muffler with Delta Flow Technology
  • Multiple Tailpipe Exits Provided in Kit
  • Large 3.00-inch Dual Tailpipes
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Flowmaster Quality
Fits 2011-2019 Chevrolet Silverado and GMC Sierra 2500HD/3500HD Crew cab/standard 6.5-foot bed models with 6.0L gas engine. 153.7" wheelbase.
Installation Notes:
Fits 2011-2019 Chevrolet Silverado and GMC Sierra 2500HD/3500HD Crew cab/standard 6.5-foot bed models with 6.0L gas engine. 153.7" wheelbase.

About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
817541_instructions.pdf3MB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Chevrolet Silverado 2500 HD High Country 2015 6.0L / 364 / V8
Chevrolet Silverado 2500 HD High Country 2016 6.0L / 364 / V8
Chevrolet Silverado 2500 HD High Country 2017 6.0L / 364 / V8
Chevrolet Silverado 2500 HD High Country 2018 6.0L / 364 / V8
Chevrolet Silverado 2500 HD High Country 2019 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2011 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2012 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2013 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2014 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2015 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2016 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2017 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2018 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LTZ 2019 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2011 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2012 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2013 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2014 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2015 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2016 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2017 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2018 6.0L / 364 / V8
Chevrolet Silverado 2500 HD LT 2019 6.0L / 364 / V8
Chevrolet Silverado 2500 HD WT 2016 6.0L / 364 / V8
Chevrolet Silverado 2500 HD WT 2017 6.0L / 364 / V8
Chevrolet Silverado 2500 HD WT 2018 6.0L / 364 / V8
Chevrolet Silverado 2500 HD WT 2019 6.0L / 364 / V8
Chevrolet Silverado 2500 HD 2011 6.0L / 364 / V8
Chevrolet Silverado 2500 HD 2012 6.0L / 364 / V8
Chevrolet Silverado 2500 HD 2013 6.0L / 364 / V8
Chevrolet Silverado 2500 HD 2014 6.0L / 364 / V8
Chevrolet Silverado 2500 HD 2015 6.0L / 364 / V8
Chevrolet Silverado 3500 HD High Country 2016 6.0L / 364 / V8
Chevrolet Silverado 3500 HD High Country 2017 6.0L / 364 / V8
Chevrolet Silverado 3500 HD High Country 2018 6.0L / 364 / V8
Chevrolet Silverado 3500 HD High Country 2019 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LTZ 2016 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LTZ 2017 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LTZ 2018 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LTZ 2019 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LT 2016 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LT 2017 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LT 2018 6.0L / 364 / V8
Chevrolet Silverado 3500 HD LT 2019 6.0L / 364 / V8
Chevrolet Silverado 3500 HD WT 2016 6.0L / 364 / V8
Chevrolet Silverado 3500 HD WT 2017 6.0L / 364 / V8
Chevrolet Silverado 3500 HD WT 2018 6.0L / 364 / V8
Chevrolet Silverado 3500 HD WT 2019 6.0L / 364 / V8
GMC Sierra 2500 HD Base 2015 6.0L / 364 / V8
GMC Sierra 2500 HD Base 2016 6.0L / 364 / V8
GMC Sierra 2500 HD Base 2017 6.0L / 364 / V8
GMC Sierra 2500 HD Base 2018 6.0L / 364 / V8
GMC Sierra 2500 HD Base 2019 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2011 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2012 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2013 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2014 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2015 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2016 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2017 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2018 6.0L / 364 / V8
GMC Sierra 2500 HD Denali 2019 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2011 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2012 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2013 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2014 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2015 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2016 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2017 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2018 6.0L / 364 / V8
GMC Sierra 2500 HD SLE 2019 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2011 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2012 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2013 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2014 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2015 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2016 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2017 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2018 6.0L / 364 / V8
GMC Sierra 2500 HD SLT 2019 6.0L / 364 / V8
GMC Sierra 2500 HD WT 2011 6.0L / 364 / V8
GMC Sierra 2500 HD WT 2012 6.0L / 364 / V8
GMC Sierra 2500 HD WT 2013 6.0L / 364 / V8
GMC Sierra 2500 HD WT 2014 6.0L / 364 / V8
GMC Sierra 3500 HD Base 2015 6.0L / 364 / V8
GMC Sierra 3500 HD Base 2016 6.0L / 364 / V8
GMC Sierra 3500 HD Base 2017 6.0L / 364 / V8
GMC Sierra 3500 HD Base 2018 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2011 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2012 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2013 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2014 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2015 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2016 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2017 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2018 6.0L / 364 / V8
GMC Sierra 3500 HD Denali 2019 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2011 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2012 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2013 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2014 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2015 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2016 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2017 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2018 6.0L / 364 / V8
GMC Sierra 3500 HD SLE 2019 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2011 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2012 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2013 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2014 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2015 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2016 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2017 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2018 6.0L / 364 / V8
GMC Sierra 3500 HD SLT 2019 6.0L / 364 / V8
GMC Sierra 3500 HD WT 2011 6.0L / 364 / V8
GMC Sierra 3500 HD WT 2012 6.0L / 364 / V8
GMC Sierra 3500 HD WT 2013 6.0L / 364 / V8
GMC Sierra 3500 HD WT 2014 6.0L / 364 / V8

Specifications:

2WD/4WD RWD/4WD
California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series American Thunder
Exit Position Dual Out Rear / Dual Out Side
Heat Shield No
Inlet Diameter (in) 3.5
Material 409 Stainless Steel
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series 50 Series HD
Outlet Diameter (in) 3
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Single Dual Dual
Sound Level Aggressive / Moderate
System Type Cat-back
Tip Diameter (in) 4
Tip Length (in) 13
Tip Quantity 2
Tubing Diameter (in) 4
Warranty Limited Lifetime (Lifetime)

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Flowmaster American Thunder Cat-Back Exhaust System 817541:
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