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Flowmaster Super 40 Series 2.5" Offset In 2.5" Same Side Out Universal Muffler 2017 2026 6.6l l5p duramax This kit fits only the FGXX 668603 This kit fits only the Timberline vehicle package and gives you the option to use larger tires and wheels The Super 40® features Flowmaster's Delta Flow® technology This part is legal for sale or use on Emissions Controlled Vehicles
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