Gibson 99-01 Chevrolet Silverado 1500 Base 4.8L 1-5/8in 16 Gauge Performance Header - Stainless

If you're looking to get more usable power out of your 1999-2001 Chevrolet Silverado 1500 or GMC Sierra 1500 with the 4.8L engine, a set of performance headers can make a real difference. These Gibson headers are designed to help your engine breathe better, which can lead to improved horsepower and torque, especially at the lower and mid-range RPMs you use most often for highway cruising. They are also tuned to help keep engine temperatures cooler, which is always a good thing for performance and longevity.

These headers are built from 16-gauge stainless steel, and feature 3/8-inch thick laser-cut port flanges. This robust construction helps prevent warping and leaks, ensuring a solid seal. Gibson designed these as a direct replacement for your factory exhaust manifolds, using OEM-style connections so they'll work with your stock crossover pipe. This means no welding is required for installation, and they use the factory connections, making the job straightforward. They're also built to be 50-state street legal, meeting EPA and CARB requirements, so you can install them without worry about emissions compliance. This makes them a solid option for both lowered and raised vehicles, whether you use your truck for street driving or off-road adventures.

Included with the headers are premium gaskets and all the necessary hardware to get them installed. Gibson backs these headers with a lifetime limited warranty, giving you confidence in your purchase. They are designed to fit a range of GM trucks from this era, including models like the Chevrolet Tahoe and GMC Yukon XL 1500, among others.