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Exhaust Exhaust Pipes, Systems and Components

Flowmaster

American Thunder Cat-Back Exhaust System 2014-2019 (Classic Body) Silverado/Sierra 1500 4.3L & 5.3L Engines Aggressive To Moderate Sound Flowmaster

$1,325.95 $1,296.57 Save $29.38

SKU: F00L 817669

In Stock
In Stock
Ships by Jun 10
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Flowmaster American Thunder Cat-Back Exhaust System (817669) is designed for 2014-2019* (*Classic body) GM Silverado/Sierra 1500 trucks with 4.3L or 5.3L engines. It's an emissions-legal, bolt-on system offering moderate interior sound and aggressive exterior tone. Features include stainless steel mandrel-bent tubing, a Super 40 series muffler with Delta Flow Technology, and dual 2.50-inch stainless steel mandrel-bent tailpipes. Users can choose between dual exit under the bumper or dual exit behind the rear tires, finished with 3.50-inch polished stainless steel tips. It uses factory hanger locations and includes all installation hardware. Covered by Flowmaster's Lifetime Limited Warranty.

Fitment

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Specifications

BrandFlowmaster
Part NumberF00L 817669

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Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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