Talk to a Silverado 1500 Sales Tech
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$12k Summer Sweepstakes! Enter Daily>

Find Exhaust Systems for your Silverado 1500

Flowmaster American Thunder Dual Exhaust System; Side/Rear Exit (14-18 5.3L Silverado 1500)Find parts that fit my vehicle

Item S104241
Flowmaster American Thunder Dual Exhaust System; Side/Rear Exit (14-18 5.3L Silverado 1500)
Verify parts fit and get product recommendations.
Silverado 1500 Sales Techs: Connect Now M-F 8:30A-11P, Sat-Sun 8:30A-9P
Our Price

$1,024.95 kit

Up to 10% off for Military & First Responders! See Details

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Recommended Install Shops
    How It Works
    Install Shops are available near Ashburn - 20149

    Add Local Shop Installation

    Total cost of service $299.00

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features & Specs

      • Moderate to Loud Sound Level
      • Better Scavenging and Exhaust Flow for Increased Horsepower and Torque
      • Delta Flow™ Super 40 Series Muffler
      • Has 2.5 in. Mandrel Bent Stainless Steel Tubing
      • Features with 3.0 in. Polished Stainless Steel Exhaust Tips
      • Split Side or Dual Rear Exits
      • Bolt-On Installation
      • Designed for Double and Crew Cab Models
      • Not for Use with 2WD Crew Cab Models with 2-Piece Driveshaft
      • Fits 2014 to 2018 5.3L Chevy Silverado 1500 Models


      Unique Flowmaster Sound. The Flowmaster American Thunder Cat-Back Exhaust emits a unique and powerful exterior exhaust note but keeps the interior sound level down to within comfortable levels. Indeed, Flowmaster’s patented Delta Flow technology is able to adjust both the interior and exterior sound levels. As a result, you can enjoy a comfortable ride with reduced sound levels inside the cab, while still turning heads with an aggressive exterior growl.

      Boosts Overall Performance. Due to the Flowmaster’s Delta Flow technology, your truck is sure to experience improved scavenging. When matched with the system’s mandrel-bent tubing, the result is a much smoother exhaust flow. This then leads to improvements in horsepower, torque, throttle response, and even fuel efficiency.

      Premium Stainless Steel Construction. The American Thunder Cat-Back is constructed from premium stainless steel. This allows for both outstanding durability and longevity, as well as minimizing the need for frequent maintenance over time.

      Bolt-On Installation. The American Thunder Cat-Back Exhaust makes use of factory mounting holes and can be bolted on easily with basic hand tools. It also comes with the option of having a dual side or dual rear exit configuration. Flowmaster recommends welding all slip-fit connections for a more secure installation.

      Application. The Flowmaster American Thunder Cat-Back Exhaust with split side or rear exits is designed to fit 2014 to 2018 5.3L Chevy Silverado 1500 models equipped with Double or Crew Cabs. It’s not compatible with 2WD Crew Cab models with 2-piece driveshaft.

      Shop All Truck Parts And Accessories

      Shop All Truck Exhaust



      Flowmaster 817669

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Inlet Pipe
      • (1) 6.5 ft. Bed Extension
      • (1) Muffler
      • (1) Tailpipe, Right
      • (1) Tailpipe, Left Front
      • (1) Tailpipe, Left Rear
      • (2) Side Exit Pipes (Right and Left)
      • (2) Rear Exit Pipes (Right and Left)
      • (2) Stainless Tips
      • Installation Hardware

      Customer Reviews (238)

        Questions & Answers

        10 More Questions

        Will It Fit My Silverado 1500

        • 5.3L V8 - 14, 15, 16, 17, 18

        Designed for Double & Crew Cab Models. It is not compatible on 2WD Crew Cab Models with 2-Piece Driveshaft.

            Related Silverado 1500 Categories