{"product_id":"variant-spec-part-type-4","title":"\u003cVariant\/Spec\u003e \u003cPart Type\u003e","description":"The Fleece Freedom Series Cummins Performance cylinder heads are meticulously manufactured and remanufactured in a state-of-the-art facility, ensuring they meet or exceed factory specifications. Each head undergoes rigorous inspection, pressure testing, decking, and painting, making it ready for immediate installation. This performance-focused cylinder head is equipped with 11 screw-in freeze plugs, effectively eliminating the possibility of coolant leaks under the valve cover.\n\nFeaturing upgraded internals, these heads include 1.300\" stainless steel alloy intake valves and 1.300\" Inconel alloy exhaust valves, paired with 105 valve springs and steel retainers. This robust construction allows the Freedom Series heads to support up to 1,100hp, making them suitable for demanding applications like sled pulling, drag racing, or heavy-duty towing where extra power is essential.\n\nInstallation of this cylinder head requires specific procedures and hardware. Valve lash adjustment is mandatory; failing to back off adjusters on rocker arms can lead to cylinder head damage. Furthermore, this head is not compatible with other aftermarket head gaskets; the use of a Fleece Performance fire-ring head gasket kit is strictly required. When using aftermarket head studs, modifications to the lower rocker box cover are also necessary, referencing ARP INSTALLATION METHOD INSTRUCTIONS. All Cummins cylinder heads ship via ground freight and typically take 3-5 business days for delivery.\n\nThis cylinder head is specifically designed for the 2003-2007 Dodge Ram 2500 and 3500 models equipped with the 5.9L Cummins engine.","brand":"Fleece Performance Engineering","offers":[{"title":"Default Title","offer_id":52688376430904,"sku":"FPE-61-10006","price":3750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664709965.webp?v=1784889295","url":"https:\/\/store.motormia.co\/products\/variant-spec-part-type-4","provider":"MOTORMIA","version":"1.0","type":"link"}