2011–2016 Chevrolet/GMC 6.6L LML Duramax 3-Inch Hood Stack Kit

Built for 2011–2016 Chevrolet Silverado and GMC Sierra HD trucks equipped with the 6.6L LML Duramax, this TRUBLU FAB SHOP hood stack kit delivers a short, direct exhaust route with handcrafted stainless construction and clean TIG-welded detail.

Material Sourcing Options

• Globally Sourced 304 Stainless Steel — $449.99: The value-focused option, fabricated to the same TRUBLU design using globally sourced 304 stainless material.
• USA-Sourced 304 Stainless Steel — $599.99: Fabricated using USA-sourced 304 stainless material.

The sourcing selection refers to the origin of the stainless material. Both options use the same kit design and fabrication process.

Construction

• 3-inch 304 stainless-steel tubing
• Hand TIG welded
• Back-purged during welding for clean, strong internal welds
• Fabricated pie-cut turbo-side transition
• Angled hood-exit section
• Made in-house by TRUBLU FAB SHOP

Fitment

Designed for 2011–2016 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD models equipped with the 6.6L LML Duramax. Confirm your truck’s engine, turbo configuration, and existing modifications before ordering.

Installation

Installation requires cutting the hood and may require adjustment based on the truck’s existing setup. Test-fit and verify final outlet placement before making any cuts. Professional installation is strongly recommended.

Important Notice

This competition-style exhaust component is intended only for applications and locations where its use is permitted. The purchaser is responsible for confirming compliance with all applicable emissions, noise, inspection, and road-use requirements.

Lead Time

This is a handcrafted product. Please allow the current posted fabrication lead time before shipment. Orders may be canceled within 24 hours of purchase; after that window, fabrication may have begun.