2001-2005 GM HD Duramax 6.6L 4" Exhaust System (MAG15398)The MagnaFlow Performance Exhaust Diesel Turbo Downpipe is engineered to improve exhaust flow directly from the turbocharger for enhanced performance. Featuring a 3in diameter mandrel bent design, this downpipe delivers 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 for long lasting
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2001-2005 GM HD Duramax 6.6L 4" Exhaust System (MAG15398)