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Flowmaster's part # 817669, American Thunder Cat-back system, has been confirmed to fit 2014-2017 Silverado/Sierra 1500 models 4.3L V6 or 5.3L V8 Crew Cab and Double Cab (does Not fit Crew Cab 2WD with 2 Pc Driveshaft). This can be ordered and installed via Marken Performance.
This bolt-on DOR/DOS (Dual Out Rear/ Dual Out Side) emissions-legal system features a stainless steel Super 40 Series muffler (3” inlet, 2 x 2.5” outlet) and dual 2.50" stainless steel mandrel bent pipes for a moderate to aggressive sound. The system finishes off with polished 3.50" stainless steel tips 13” long. The exhaust system is manufactured in the USA and is covered by Flowmaster's Lifetime Limited Warranty.
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