The Fleece Performance Freedom Series cylinder head for the 6.6L Duramax is a remanufactured performance component designed to meet or exceed factory specifications. Manufactured in the company's advanced Freedom Racing Engine shop, each head undergoes meticulous inspection, pressure testing, and leak testing to ensure quality and durability. Equipped with new valve guides, springs, and valve seals, these cylinder heads feature precision-ground stock valves with a 45-degree angle on both the intake and exhaust ports. They are suitable for daily driving and towing applications, providing reliable performance and longevity. The heads are designed to deliver improved airflow and efficiency, making them a solid upgrade for Duramax engines.
Compatible with 2004.5-2005 GM Duramax 2500-3500 LLY models, these cylinder heads are intended as direct replacements or upgrades for stock components. They are ideal for use in street, towing, or general performance applications, offering a cost-effective solution with no core charge. Installation involves replacing the existing factory heads, and all units come with a 1-year limited parts warranty. These heads are suitable for enthusiasts seeking enhanced engine performance and durability in their Duramax-powered trucks.
