The Fleece Freedom Series Cummins Cylinder Head – Street (FPE-61-10005) is a premium replacement designed specifically for 2003–2007 5.9L Cummins engines. Built to deliver exceptional reliability and performance, this cylinder head is ideal for street-driven trucks that demand durability without sacrificing everyday drivability. Each head comes fully assembled with upgraded valve springs, hardened valve seats, and improved casting strength to handle increased boost and power levels. Engineered and tested to meet or exceed OEM standards, the Freedom Series head ensures consistent performance under high-stress conditions, making it a trusted choice for Cummins enthusiasts looking to maintain or enhance their truck’s capabilities.