The Fleece Freedom Series Duramax Cylinder Head – Passenger Side (FPE-61-10004-P) is a high-performance replacement component specifically engineered for 2011-2016 GM 6.6L Duramax LML engines. Designed to meet or exceed OEM standards, this cylinder head offers enhanced durability, improved airflow, and superior sealing capabilities, making it an ideal upgrade for both stock and modified diesel applications. Manufactured with precision and featuring premium materials, the Freedom Series cylinder head helps to optimize engine performance, reduce emissions, and support higher boost levels. Whether you’re rebuilding your engine or upgrading for more power, this passenger-side cylinder head delivers the reliability and performance expected from Fleece Performance Engineering.