Gibson Exhaust GP134S Performance Header - Stainless Steel, 50-State Legal

The Gibson GP134S Performance Header is a stainless steel direct-replacement exhaust manifold engineered and dyno-tuned to deliver measurable gains in horsepower and torque, particularly at low and mid-range RPM highway speeds. Designed as a true bolt-on upgrade, this header improves engine breathing efficiency while contributing to cooler overall operating temperatures.

Key Features:

• Dyno-tuned design engineered to maximize usable horsepower and torque in the low and mid-range RPM band
• Direct OEM replacement — fits in place of the factory exhaust manifold using the stock crossover pipe
• Compatible with lowered and raised vehicles, as well as street and off-road applications
• 3/8" heavy-duty laser-cut port flanges resist warping and prevent exhaust leaks
• Stainless steel construction for superior corrosion resistance and long-term durability
• OEM-style connections for straightforward, no-weld installation
• Premium gaskets and all necessary hardware included
• 50-State street legal — meets EPA and CARB requirements
• Will not affect the factory warranty
• Backed by a Lifetime Limited Warranty

The Gibson GP134S is an ideal performance upgrade for enthusiasts looking to extract more power from their engine without sacrificing emissions compliance or daily drivability. No welding is required, making this a practical choice for both professional installers and experienced DIYers.