2007.5-2018 Cummins Fleece Freedom Series Cylinder Head (Performance Street)

Freedom Series cylinder heads are manufactured in Fleece's state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications. All heads are inspected, pressure checked, decked, painted, and ready for installation. Plus, the 11 screw in freeze plugs ensure you’ll never worry about a coolant leak under the valve cover again.Whether you are sled pulling, drag racing, or just looking for extra power when towing, our Performance heads will get you the power you need and include larger Manley valves and are rated up to 1,100hp!

** Core and crate return required - all paperwork & instructions for return included with the new cylinder head.  Read Fleece core charge policy here. You are responsible for all return shipping costs of the core. 

*** FOLLOW ALL INSTALLATION INSTRUCTIONS; Valve lash required. Back off adjusters on rocker arms or damage will occur to the cylinder head. Verify flatness of the block prior to installation. Installation of fire ring heads should only be performed by an experienced technician.  

**** Will not work with other aftermarket head gaskets - use of Fleece Performance fire-ring head gasket kit is required.

***** When utilizing aftermarket head studs, lower rocker box cover modifications are required.  Reference ARP INSTALLATION METHOD INSTRUCTIONS.

****** ALL CUMMINS CYLINDER HEADS SHIP GROUND FREIGHT. BASED ON YOUR LOCATION THE SHIPPING TIME IS TYPICALLY 3-5 DAYS BUSINESS DAYS.