BBK 4005 Features:

• Gaskets and Hardware Included
• 10-13 Horsepower Increase
• 16-Gauge Steel Tubing for Maximum Flow
• 3/8 in. Thick Flanges
• Direct Bolt-On for Easy Installation
• The ceramic coating offers an excellent thermal barrier to help reduce under-hood heat temperatures that will help increase horsepower

BBK 4005 Notes:

• Fits ONLY Full-Size 2WD and 4WD Truck and SUVs Only - Does NOT smaller trucks or smaller SUVs like Envoy Denali, Trailblazer SS, or SSR
• DO NOT use header wrap on any BBK Performance exhaust headers or pipes as it will void the BBK warranty

Emissions Note:

This part is legal for sale and use on 1999-2013 Chevy/GMC Truck Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturer's application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number D-245-18.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART