Gibson 1-1/2in 16 Gauge Stainless Performance Header for Select 1999-2005 Ford F-250/F-350 & Excursion (6.8L)

Fits select 1999-2005 Ford F-250 Super Duty, F-350 Super Duty, and Excursion (6.8L).

Upgrade your V10's exhaust flow with the Gibson Performance Header (GP125S). Engineered as a direct replacement for restrictive factory manifolds, these headers are dyno-tuned to provide more usable horsepower and torque in the low-to-mid range RPM bands—perfect for towing, highway cruising, and heavy-duty applications. The mandrel-bent 409L stainless steel construction ensures smooth exhaust gas scavenging while helping to maintain lower engine operating temperatures.

Built for durability, these headers feature heavy-duty 3/8-inch laser-cut port flanges that resist warping and leaking even under extreme heat. Designed for a true bolt-on installation, they utilize the factory crossover pipe and OEM-style connections, requiring no welding. They are 50-state street legal, meeting EPA and CARB requirements without affecting your factory warranty.

• 1-1/2 in. 16-gauge mandrel-bent 409L stainless steel tubing
• Heavy-duty 3/8 in. laser-cut port flanges for a leak-free seal
• Direct bolt-on replacement; uses OEM style connections
• Dyno-tuned for improved low and mid-range performance
• Includes premium gaskets and all necessary mounting hardware
• 50-State Street Legal (CARB/EPA compliant)
• Manufacturer Part Number: GP125S
• Backed by a Lifetime Limited Warranty