2004.5-2010 GM 6.6L Duramax LLY LBZ LMM 3" Performance Downpipe

Constructed from high-quality stainless steel, offering superior heat resistance and structural durability for the demanding turbo-side environment.

Features a full 3.0-inch outside diameter (OD) for both inlet and outlet, ensuring maximum exhaust volume and improved turbocharger efficiency.

Engineered to reduce exhaust backpressure, resulting in an approximate horsepower gain of 10-15 HP and improved overall engine responsiveness.

Designed to optimize power delivery and enhance fuel efficiency, helping you get the most out of your Duramax engine.

Complete installation package: Includes all essential hardware required for a quick, straightforward, and secure setup.

Engineered for excellence: precision-formed to ensure a direct fit, providing a reliable foundation for your performance build.

Fits: 2004.5-2010 Chevy Silverado / GMC Sierra 2500HD / 3500HD trucks equipped with 6.6L LLY, LBZ, or LMM Duramax turbo diesel engines.