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Gibson performance header for 2001–2003 Chevrolet Silverado 3500 8.1L improves usable horsepower and torque at low and mid-range RPMs by optimizing exhaust flow. Constructed from heavy-duty 16-gauge 409L stainless with mandrel-bent 1¾" tubing, 3/8" laser-cut port flanges and OEM-style connections for direct replacement using the stock crossover. Includes premium gaskets and hardware, no welding required, CARB/EPA-compliant and 50-state legal with a lifetime limited warranty.
Gibson 01-03 Chevrolet Silverado 3500 Base 8.1L 1-3/4in 16 Gauge Performance Header - Stainless
