Designed for 2003-2013 Chevy Avalanche, GMC Sierra 1500, this header routes spent gases away from the GM LS more efficiently than the factory manifold.

What's Included:

• 1 7/8 in. primary tube diameter for optimized exhaust velocity.
• 2.50 in. collector diameter for a smooth transition into the exhaust system.
• Mild Steel construction with a painted finish for durability.
• Sold as a Pair, complete with mounting hardware and gaskets for installation.