Seguler 1999-2005 Chevy GMT800 V8 Engine Truck Stainless Steel Manifold Headers Y-Pipe Gasket

-Fitment:
2001-2004 GMC Yukon(except 2003 GMC Yukon SLT Sport Utility 4-Door 5.3L)
2000-2004 GMC Yukon XL 1500
1999-2005 GMC Sierra
2002-2005 Chevy Avalanche 1500
1999-2005 Chevy Silverado 1500
2000-2004 Chevy Suburban 1500
2000-2004 Chevy Tahoe
-Packing:
1X Header Manifold Kit
All necessary installation hardware (as shown in the picture).
-Air Intake:
Filter: 4.00" Inner Diameter, 10.50" Overall Height
Aluminum Charge Pipe: 3.75" Inlet / Outlet
High Heat Tolerance Silicone Hoses: 3.75" Inlet / Outlet
-Header Exhaust:
Inlet/ Outlet: 1.875" (8 X Manifold Ports)/ 2.500" (Outer Diameter)
Main Piping Diameter: 2.500
-Feature:
1. Getting more air into your engine and more exhaust out is the key to a performance motor. That's where exhaust headers is significant as the first revenue of an exhaust system. Exhaust performance headers manipulate the air flow with the performance-robbing exhaust manifold that came with your car.
2. Headers provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders; thus, the back pressure 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 vehicle. Combining with a high performance cold air intake, and a cat-back exhaust system, a header system removes all restrictions of your engine, then, it is able to perform at its full potential.