2006-2007 GM HD 6.6L 4" Turbo Down Pipe (MAG15399)The MagnaFlow Turbo Downpipe is engineered to enhance exhaust flow directly from the turbocharger for improved diesel performance. Featuring a 4in diameter mandrel bent design, this downpipe provides smooth, unrestricted airflow while maintaining a weight optimized construction. Built from 100% durable, corrosion resistant stainless steel and manufactured using precision CNC robotic techniques, it is designed to deliver long lasting reliability in
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2006-2007 GM HD 6.6L 4" Turbo Down Pipe (MAG15399)