BBK Performance Shorty Tuned Length Headers - Titanium Ceramic - 1-5/8 in. - 1999-2013 GM Truck/SUV (4.8L / 5.3L) 4005

Fits select 1999-2013 Buick, Cadillac, Chevrolet, and GMC trucks and SUVs (4.8L / 5.3L).

BBK Performance shorty tuned length exhaust headers are engineered as direct-fit replacements for factory manifolds on 1999-2013 GM truck and SUV applications. These headers are constructed from 1-5/8 in. CNC mandrel-bent tubing to provide unrestricted exhaust flow, increasing horsepower and torque over restrictive OEM units. The tuned length design optimizes scavenging waves for more efficient combustion and improved fuel economy.

Built for long-term durability, these headers feature heavy-duty 3/8 in. laser-cut flanges for a guaranteed leak-free seal and are robotically and precision hand-welded before undergoing pressure testing. The Titanium Ceramic finish provides superior heat insulation and corrosion resistance, ensuring years of reliability. These headers are 50-state emissions legal.

• 1-5/8 in. CNC mandrel-bent tubing for maximum flow
• Heavy-duty 3/8 in. laser-cut flanges for structural integrity
• Titanium Ceramic finish for heat management and durability
• 50-state legal for street use
• Direct bolt-on installation
• Includes new exhaust gaskets and header bolts
• Manufacturer Part Number: 4005

Installation Note: You must remove the factory OE doughnut gasket from the passenger side manifold and reinstall it on the BBK passenger side header to ensure the mid-pipe seals correctly.