Flowmaster American Thunder Cat-Back Exhaust System For 07-13 GM 1500 4.8L/5.3L winches Ensures proper coolant flow and

Ensures proper coolant flow and functionality

Designed and manufactured by RevMax in Charlotte

corrected CV joint angles

Seat/Style: Cone Seat Nut

600 LM Each

Flowmaster American Thunder Cat-Back Exhaust System For 07-13 GM 1500 4.8L/5.3L winches Ensures proper coolant flow andOur American Thunder cat back exhaust system for 2007 2013 GM Silverado Sierra 1500 with the 5. 3L engine, is perfect for the person looking for moderately aggressive sound levels both inside and outside of the truck. This bolt on emissions legal system features 3. 00 inch mandrel bent stainless steel tubing flowing into a Super 40 Series muffler, for a deep powerful sound. The mandrel bent 2. 50 inch stainless steel tailpipes can be configured with