Gibson Exhaust GP403S Performance Header - Stainless Steel

The Gibson Performance GP403S stainless steel header is engineered to deliver measurable gains in usable horsepower and torque at low and mid-range RPM where you need it most. Each header is dyno-tuned to optimize exhaust flow, improving your engine's ability to breathe while reducing operating temperatures for better performance and longevity.

Key Features:

• Stainless steel construction for maximum durability and corrosion resistance
• Direct bolt-on replacement for factory manifolds using stock crossover pipe
• 3/8" heavy-duty laser-cut port flanges prevent warping and eliminate leaks
• 50-state street legal and meets EPA and CARB emissions requirements
• Premium gaskets and all necessary hardware included for complete installation
• OEM-style connections require no welding or modifications
• Compatible with lowered, raised, street, and off-road vehicles
• Will not void factory warranty

Gibson backs this performance header with a lifetime limited warranty, giving you confidence in your investment. Installation is straightforward using factory mounting points and the included premium gaskets ensure a leak-free seal. Whether you're looking for better throttle response, improved fuel efficiency, or simply want to unleash your engine's potential, the GP403S header delivers proven results.