Fleece 5.9L Freedom Series Cummins Cylinder Head Stage 3 (Performance)

Introducing our Freedom Series Cummins Performance cylinder heads. Each cylinder head is manufactured in our 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 5.9L Performance will get you the power you need and are rated up to 1,100hp! 

Features

• Fire ring the cylinder head (All in the head)
• 11 screw in freeze plugs (eliminates coolant leaks)
• Hardened, oversized press in valve seats
• New valve guide liners
• 1.300" stainless steel alloy intake valves
• 1.300" inconel alloy exhaust valves
• 105 valve springs and steel retainers
• Fire ring gasket kit with multi-layer steel gasket and 4.550" diameter rings

Notes

** Core and crate return required - all paperwork & instructions for return included with the new cylinder head.  Read our 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. 

**** 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.