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Introducing the all-new, Fleece Performance Freedom Series HD cylinder heads for the 2003-2007 6.0L Ford Power Stroke. Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. Our HD cylinder heads are built on a brand-new casting that has been engineered from the ground up for increased durability and longevity. Fully assembled and ready to install - all heads are equipped with hardened, oversized press-in valve seats, new valve guides, springs, valves, and valve seals. Standard with our one-piece O-rings in the head to ensure maximum cylinder sealing. Perfect for a daily driver or heavy-duty towing application where reliability and uptime are a must.
What sets our cylinder heads apart from the competition:
Improved casting. This isn’t your run of the mill, rinse and repeat OE casting. Engineered from the ground up with years of testing and development - our higher tensile strength alloy castings incorporate increased wall thickness and additional material where it counts, providing for a more durable and longer lasting cylinder head.
Extreme duty valve seats. Race proven and stronger than OEM – our American made valve seats provide for longevity and stability in the cylinder head. Produced from a tungsten alloy for increased hardness, these seats deliver a substantially higher wear resistance vs. a stock replacement seat.
Single piece O-ring. Our 6.0L cylinder head is the only cylinder head available with a single piece hoop style O-ring. Our single piece O-ring ensures complete sealing of combustion vs. traditional stainless wire that has a seam.