GM Truck 4.8L & 5.3L 2007-2013 Long SystemARH long tube headers long system for the 2007 2013 Chevy GM Truck SUV 4. 8L 5. 3L features 304 stainless steel 1 3 4" primaries, 3" merge collectors, and y pipe along with all the necessary hardware and gaskets for a bolt on installation. The 2007 2013 Chevy GM Truck SUV 4. 8L 5. 3L American Racing Headers long systems were designed to bolt on to your factory axle back or any aftermarket axle back. Some modification may be required. The American
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