2008-2010 H3 5.3L System Cat Back (MAG16832)The MagnaFlow Street Series Cat Back Performance Exhaust System is engineered to enhance the sound, performance, and driving experience of your Sys C B 08 Hummer H3 5. 3L V8. Featuring fast flowing, mandrel bent 2. 5in stainless steel piping and 1 straight through performance muffler, this system delivers MagnaFlow's signature deep, resonant tone with dyno proven performance gains. Designed to produce Moderate exterior and Mild interior sound levels,
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