Gibson Performance GP400S Performance Header. Performance Header; Short Tube Style; 1.5 in. 14 Gauge Tubing; Direct Fit; Stainless Steel. Engine Make/Size: Mopar 4.0L. Port Shape: Same As Port/Can Be Matched.
Tube Diameter: 1.500 in. WARNING CA Proposition 65: Yes. WARNING CA Proposition 65 Message: WARNING: Motor vehicles contain fuel; oils and fluids; battery posts; terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer; birth defects and other reproductive harm.
These chemicals are found in vehicles; vehicle parts and accessories; both new and as replacements. When being serviced; these vehicles generate used oil; waste fluids; grease; fumes and particulates; all known to the State of California to cause cancer; birth defects; and reproductive harm. Heavy Duty 409L Stainless 16 Gauge Tubing. Thick Laser Cut Port Flanges.Every Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off-road. Meets EPA and CARB requirements. Heavy Duty Laser Cut Port Flanges- No Warping or Leaking. Premium Gaskets and Hardware included. Every exhaust system is designed for hassle free, bolt on installation with professional looking results. Gibson's exhaust systems are engineered & dyno-tested to decrease backpressure, and produce more torque, with increased horsepower and better fuel economy. No cash or compensation for labor will be given for defects in material and workmanship. Visit our store for futher details.