The Fleece Freedom Series Duramax Cylinder Head – Driver Side (FPE-61-10002-D) is a premium replacement component specifically engineered for 2004.5-2005 GM trucks equipped with the Duramax LLY engine. Designed to deliver superior strength, durability, and performance, this cylinder head is meticulously cast from high-quality materials and undergoes rigorous machining to ensure precise tolerances and a perfect fit. It features upgraded valve seats and guides to handle higher combustion pressures and temperatures, making it an ideal choice for both stock and high-performance applications. Whether you’re restoring your LLY Duramax to factory condition or building a robust platform for added horsepower, the Fleece Freedom Series Cylinder Head offers reliability and peace of mind with every mile.