{"product_id":"03-06-6-0l-cnc-fab-18mm-stage-2-cylinder-head-set-421021","title":"03-06 6.0L CNC Fab 18mm Stage 2 Cylinder Head Set - 421021","description":"\u003ch3\u003e\u003cspan style=\"font-size: 12pt;\"\u003e2003-2006 6.0L CNC Fabrication 18mm Stage 2 Cylinder Head Set PN: 421021\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eEliminate the weak links in your cooling and combustion system with the \u003cstrong\u003eCNC Fab 18mm Stage 2 Cylinder Head Set\u003c\/strong\u003e. Specifically engineered for the \u003cstrong\u003e2003-2006 6.0L Powerstroke\u003c\/strong\u003e, these 18mm dowel heads are the ultimate solution for owners battling recurring \u003cstrong\u003ehead gasket failure\u003c\/strong\u003e and factory casting fatigue. Unlike standard remanufactured units, these feature \u003cstrong\u003ebrand new upgraded castings\u003c\/strong\u003e with reinforced material in high-stress areas to prevent the localized cracking common in OEM Ford diesel heads.\u003c\/p\u003e\n\u003cp\u003ePrecision is at the core of this set. Each head is \u003cstrong\u003ein-house machined\u003c\/strong\u003e on industry-leading Sunnen seat and guide equipment, ensuring tolerances that exceed original equipment specifications. To provide a permanent seal under high cylinder pressures, these heads come \u003cstrong\u003eo-ringed\u003c\/strong\u003e, a critical upgrade for any 6.0L owner looking for long-term durability. The inclusion of \u003cstrong\u003ehardened valve seats\u003c\/strong\u003e further resists wear and recession, while the entire assembly is \u003cstrong\u003evacuum checked\u003c\/strong\u003e to guarantee a perfect valve-to-seat seal right out of the box.\u003c\/p\u003e\n\u003cp\u003eThis Stage 2 set is a comprehensive \"bolt-on\" upgrade, arriving fully loaded with \u003cstrong\u003eall new intake and exhaust Inconel valves \u003c\/strong\u003efor higher heat\u003cstrong\u003e \u003c\/strong\u003eapplication, CNC Fabrication Stage 2 heavy-duty valve springs, retainers, keepers, and seals. Whether you are performing a stock rebuild or building a reliable daily driver, these heads provide the structural integrity required for the modern performance aftermarket. Best of all, these are sold with \u003cstrong\u003eno core return required\u003c\/strong\u003e, eliminating expensive freight costs and downtime. Invest in the longevity of your \u003cstrong\u003e6.0L Powerstroke\u003c\/strong\u003e with a set of cylinder heads designed to outperform and outlast.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eIn-house Machined\u003c\/strong\u003e on our Sunnen Seat \u0026amp; Guide Machine to Exceed OEM Specifications w\/ the Latest Tooling\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eBrand New\u003c\/strong\u003e Upgraded Castings to Prevent Cracking\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eO-ringed\u003c\/strong\u003e on our \u003cstrong\u003eHurco \u003c\/strong\u003eMilling Center to Prevent Head Gasket Failure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eAll New\u003c\/strong\u003e Intake and Exhaust \u003cstrong\u003eInconel \u003c\/strong\u003eValves\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003e4-Angle\u003c\/strong\u003e Valve Job\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eNew Made in the USA\u003c\/strong\u003e CNC Fabrication Stage 2 Valve Springs\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eMatched Valve Springs\u003c\/strong\u003e for Balanced Seat Pressures\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eNew \u003c\/strong\u003eRetainers, Keepers, and Seals\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eHardened Valve Seats\u003c\/strong\u003e to Resist Wear and Cracking\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eVacuum Checked\u003c\/strong\u003e to Ensure Proper Valve Seat Sealing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eNo Core\u003c\/strong\u003e Return Required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cstrong\u003eInspection Checksheet\u003c\/strong\u003e Included w\/ All Documented Measurements\/Tolerances\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 12pt;\"\u003eFitment\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e2003–2007 Ford F-250 \/ F-350 \/ F-450 \/ F-550 Super Duty 6.0L Powerstroke\u003c\/li\u003e\n\u003cli\u003e2003–2005 Ford Excursion 6.0L\u003c\/li\u003e\n\u003cli\u003e2004–2010 Ford E-Series 6.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 12pt;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0816\/4504\/4022\/files\/CNC-Fabrication-Official-Product-badge_f45a8cb1-0bc9-4a65-9b5b-a0a7d149d146.jpg?v=1711919967\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"CNC Fabrication","offers":[{"title":"Default Title","offer_id":67980027887926,"sku":null,"price":2995.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/4504\/4022\/files\/STG2-421201-421024.jpg?v=1794339659","url":"https:\/\/cncfab.us\/products\/03-06-6-0l-cnc-fab-18mm-stage-2-cylinder-head-set-421021","provider":"CNC Fabrication, LLC","version":"1.0","type":"link"}