2007-2013 GMC Sierra 1500 4.8L 5.3L 6.0L 6.2L Long Tube Exhaust Header kits Catalytic Converters xDrive 40d

xDrive 40d

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2007-2013 GMC Sierra 1500 4.8L 5.3L 6.0L 6.2L Long Tube Exhaust Header kits Catalytic Converters xDrive 40dFeature: 1. Getting more air into your engine and more exhaust out is the key to a performance motor. That's where exhaust headers is significant as the first revenue of an exhaust system. Exhaust performance headers manipulate the air flow with the performance robbing exhaust manifold that came with your car. 2. Headers provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders; thus, the