T304 Stainless Steel 3-1 Shorty Exhaust Header for 1999-2004 Ford Mustang Gen4 3.8L 3.9L V6

Vehicle Fitment : 1999-2004 Ford Mustang 3.8L 3.9L V6 What's in the box: Stainless Steel Racing Header Mounting hardware, bolts and gaskets Product Feature: Performance header provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders; thus, the backpressure that occurs in common exhaust manifolds. When cylinders don't have to fight with each other to expel their exhaust, they can put more power through the wheels, pushing the engine to the full potential.     Made of High Quality T-304 Stainless Steel Material Inlet/ Outlet: 1-7/8 OD/ 2-1/2 OD 3-1 Shorty Header Design Replaces OEM Manifolds TIG Welded CNC Machine Flanges O2 Sensor Bungs Included Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq.