The Fleece Performance 5.9L Freedom Series Cummins Cylinder Head is built to OEM-or-better standards for diesel truck owners who want a no-compromise upgrade. Engineered, manufactured, and supported by Fleece - the diesel performance specialists.

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
• Manley 1.300 inch stainless valves
• 105 valve springs and steel retainers
• Fire ring gasket kit with multi-layer steel gasket and 4.550 inch diameter rings
• Follow All Installation Instructions; Valve lash required. Back off adjusters on rocker arms or damage will occur to the cylinder head.

Notes

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

Specifications

• Fuel Type: Diesel
• Engine: 5.9L Cummins
• Country of Origin: US

Manufacturer Description

Freedom Series Cummins Performance cylinder heads. Each 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!