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Installing performance headers in place of the stock components found in your GMC Sierra, using well-made 2007-2018 headers from aftermarket parts companies, provides a power boost on its own and works even better combined with other mods. AmericanTrucks carries the finest quality headers made today for pickup truck use, with your choice of shorty headers and long tube headers. Materials used include 16-gauge wall tubing made from rust-proof stainless steel, in many cases with a ceramic coating to offer even more corrosion resistance. These parts suck exhaust fumes strongly out of the cylinders – “scavenging” – which cuts down on backpressure and lets the engine run freer and stronger, generating up to a couple of dozen extra horsepower and ft/lbs of torque. AmericanTrucks stocks GMC Sierra headers for both 5.3L V8 engines and 6.2L V8 engines.


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