Freedom Series HD Cylinder Head - 20mm Dowel

Features:

• Fits 2003–2007 6.0L Power Stroke
• Brand-new high strength cylinder head casting
• Freedom Series HD durability focused design
• Single-piece O-ring combustion sealing
• Hardened oversized press-in valve seats
• Fully assembled and ready to install
• New stainless and Inconel valvetrain components
• Built for towing and daily driving reliability
• Race-proven durability with increased wall thickness
• No core charge or core return required
• Configured for 20mm dowel applications

Built To Fix What The 6.0L Got Wrong

If you're tired of the weak links in your 6.0L Power Stroke and want a permanent fix, the Fleece Freedom Series HD Cylinder Head is the upgrade you’ve been waiting for. Designed specifically for 2003-2007 Ford Super Duty trucks, this head is built brand new from the casting up, not remanufactured, not reused, just pure strength and reliability. It’s fully assembled and ready to drop in, making it a no-hassle choice for anyone dealing with head gasket issues, poor sealing, or worn-out valvetrain components. With a single-piece O-ring for a tighter combustion seal, hardened press-in valve seats, and upgraded valves and springs, it’s built to last whether you’re towing heavy or putting on daily miles. There’s no core charge, no core return, and no need to guess if you’re getting something dependable. This head was made for truck owners who need uptime and durability, not excuses. If you want to keep your 6.0L on the road and out of the shop, this is your fix.

Engineered From New Castings With Race Proven Hardware

The Fleece FPE-61-10012-HD Cylinder Head stands apart thanks to its precision engineering and attention to long-term durability. Unlike many options built from OE cores, this head starts with a brand-new casting that uses a higher tensile strength alloy and added material in high-stress zones. The result is a stronger, more stable head that holds up under heat, pressure, and load. Each unit includes oversized, hardened press-in valve seats made from tungsten alloy for increased wear resistance, along with stainless and Inconel valves, new springs, seals, and retainers. A one-piece O-ring seals combustion more effectively than traditional seamed wire rings, offering better sealing across the board. This version is built for 20mm dowel engines and is configured for the 2-bolt rocker box setup used on 2003-2007 models. Fleece also recommends using 6.4L pushrods to account for tolerance variations when installing this head. With no core exchange required, this is a clean-slate solution built to outlast and outperform the factory head in every category.

Fitment: 2003, 2004, 2005, 2006, 2007 Ford F250/F350 Super Duty 6.0L Powerstroke

Notes:

• Designed for 2003–2007 Ford Super Duty 6.0L Power Stroke
• Built on a brand-new casting, not remanufactured
• Configured specifically for 20mm dowel applications
• Compatible only with 2-bolt rocker box configurations
• Head gasket not included and must be purchased separately
• Fleece recommends shorter 6.4L pushrods for proper fitment
• No core charge or core return required
• Fully assembled and ready for installation
• Single-piece O-ring design improves combustion sealing
• Ideal for daily driving and heavy towing reliability