{"product_id":"kdd-6-7-powerstroke-o-ring-cylinder-heads","title":"KDD 6.7 Powerstroke O-Ring Cylinder Heads","description":"\u003ch1\u003e\u003cstrong data-start=\"437\" data-end=\"486\"\u003eKDD O-Ringed 6.7L Power Stroke Cylinder Heads\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp data-start=\"488\" data-end=\"543\"\u003e\u003cstrong data-start=\"488\" data-end=\"543\"\u003eProven reliability. Built the KDD Way.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"545\" data-end=\"936\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"549\" data-end=\"598\"\u003eKDD O-Ringed 6.7L Power Stroke Cylinder Heads\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eare designed for customers who want maximum reliability and head gasket sealing without changing factory airflow characteristics. Starting with\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"743\" data-end=\"774\"\u003ebrand-new OEM Ford castings\u003c\/strong\u003e, each set is fully machined and assembled in-house by Kill Devil Diesel using the same precision processes applied to our highest-end performance cylinder heads.\u003c\/p\u003e\n\u003cp data-start=\"938\" data-end=\"1151\"\u003eThese heads retain factory port geometry and drivability while adding critical upgrades to improve durability under increased cylinder pressure, making them an ideal solution for stock and lightly modified trucks.\u003c\/p\u003e\n\u003chr data-start=\"1153\" data-end=\"1156\"\u003e\n\u003ch2 data-start=\"1158\" data-end=\"1195\"\u003eBuilt From Brand-New Ford Castings\u003c\/h2\u003e\n\u003cp data-start=\"1197\" data-end=\"1415\"\u003eEvery KDD O-Ringed head begins as a\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1233\" data-end=\"1265\"\u003enew, unused Ford OEM casting\u003c\/strong\u003e—never remanufactured. From there, each head receives KDD’s complete machining process, including precision valve seat machining and final inspection.\u003c\/p\u003e\n\u003cp data-start=\"1417\" data-end=\"1555\"\u003eBy starting with new castings, we eliminate the unknowns commonly associated with reman heads and ensure consistent quality and longevity.\u003c\/p\u003e\n\u003chr data-start=\"1557\" data-end=\"1560\"\u003e\n\u003ch2 data-start=\"1562\" data-end=\"1609\"\u003ePrecision O-Ring Sealing for Added Insurance\u003c\/h2\u003e\n\u003cp data-start=\"1611\" data-end=\"1773\"\u003eEach cylinder head is\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1633\" data-end=\"1666\"\u003eO-ringed by Kill Devil Diesel\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto improve head gasket sealing and reduce the risk of combustion leakage under elevated cylinder pressure.\u003c\/p\u003e\n\u003cp data-start=\"1775\" data-end=\"1817\"\u003eThis upgrade is especially beneficial for:\u003c\/p\u003e\n\u003cul data-start=\"1818\" data-end=\"1949\"\u003e\n\u003cli data-start=\"1818\" data-end=\"1834\"\u003e\n\u003cp data-start=\"1820\" data-end=\"1834\"\u003eTuned trucks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1835\" data-end=\"1858\"\u003e\n\u003cp data-start=\"1837\" data-end=\"1858\"\u003eMild turbo upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1859\" data-end=\"1888\"\u003e\n\u003cp data-start=\"1861\" data-end=\"1888\"\u003eHeavy towing applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1889\" data-end=\"1949\"\u003e\n\u003cp data-start=\"1891\" data-end=\"1949\"\u003eCustomers looking to prevent repeat head gasket failures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1951\" data-end=\"2041\"\u003eThe O-ring process enhances sealing without compromising serviceability or street manners.\u003c\/p\u003e\n\u003chr data-start=\"2043\" data-end=\"2046\"\u003e\n\u003ch2 data-start=\"2048\" data-end=\"2102\"\u003eStreet-Friendly, Reliable, and Fully OEM Compatible\u003c\/h2\u003e\n\u003cp data-start=\"2104\" data-end=\"2125\"\u003eThese heads maintain:\u003c\/p\u003e\n\u003cul data-start=\"2126\" data-end=\"2246\"\u003e\n\u003cli data-start=\"2126\" data-end=\"2170\"\u003e\n\u003cp data-start=\"2128\" data-end=\"2170\"\u003eFactory intake and exhaust port geometry\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2171\" data-end=\"2193\"\u003e\n\u003cp data-start=\"2173\" data-end=\"2193\"\u003eStock valve sizing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2194\" data-end=\"2246\"\u003e\n\u003cp data-start=\"2196\" data-end=\"2246\"\u003eOEM-like drivability and emissions compatibility\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2248\" data-end=\"2357\"\u003eAll factory components—including intake manifolds, valve covers, and accessories—bolt on exactly as intended.\u003c\/p\u003e\n\u003chr data-start=\"2359\" data-end=\"2362\"\u003e\n\u003ch2 data-start=\"2364\" data-end=\"2379\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"2381\" data-end=\"2688\"\u003e\n\u003cli data-start=\"2381\" data-end=\"2430\"\u003e\n\u003cp data-start=\"2383\" data-end=\"2430\"\u003eBrand-new OEM Ford 6.7L Power Stroke castings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2431\" data-end=\"2471\"\u003e\n\u003cp data-start=\"2433\" data-end=\"2471\"\u003eKDD precision machining and assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2472\" data-end=\"2523\"\u003e\n\u003cp data-start=\"2474\" data-end=\"2523\"\u003eO-ringed decks for improved head gasket sealing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2524\" data-end=\"2560\"\u003e\n\u003cp data-start=\"2526\" data-end=\"2560\"\u003eCNC-machined valve seat profiles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2561\" data-end=\"2601\"\u003e\n\u003cp data-start=\"2563\" data-end=\"2601\"\u003eHeavy-duty performance valve springs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2602\" data-end=\"2639\"\u003e\n\u003cp data-start=\"2604\" data-end=\"2639\"\u003eFactory port geometry and airflow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2640\" data-end=\"2688\"\u003e\n\u003cp data-start=\"2642\" data-end=\"2688\"\u003eFully compatible with all factory components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2690\" data-end=\"2693\"\u003e\n\u003ch2 data-start=\"2695\" data-end=\"2716\"\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul data-start=\"2718\" data-end=\"2887\"\u003e\n\u003cli data-start=\"2718\" data-end=\"2761\"\u003e\n\u003cp data-start=\"2720\" data-end=\"2761\"\u003eStock or lightly modified daily drivers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2762\" data-end=\"2788\"\u003e\n\u003cp data-start=\"2764\" data-end=\"2788\"\u003eTowing and work trucks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2789\" data-end=\"2822\"\u003e\n\u003cp data-start=\"2791\" data-end=\"2822\"\u003eMild tuning or turbo upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2823\" data-end=\"2887\"\u003e\n\u003cp data-start=\"2825\" data-end=\"2887\"\u003eCustomers seeking maximum reliability and sealing confidence\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2889\" data-end=\"2892\"\u003e\n\u003ch3 data-start=\"2894\" data-end=\"2917\"\u003e\u003cstrong data-start=\"2898\" data-end=\"2917\"\u003eThe Bottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2919\" data-end=\"3196\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"2923\" data-end=\"2972\"\u003eKDD O-Ringed 6.7L Power Stroke Cylinder Heads\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edeliver OEM drivability with added durability where it matters most. If you want factory-style performance backed by Kill Devil Diesel machining and improved head gasket sealing, this is the right foundation for your build.\u003c\/p\u003e\n\u003ch2\u003eFeatures:\u003c\/h2\u003e\n\u003cmain role=\"main\" id=\"MainContent\" class=\"main-content js-focus-hidden\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"shopify-section\" id=\"shopify-section-product-template\"\u003e\n\u003cdiv data-enable-history-state=\"true\" data-section-type=\"product\" data-section-id=\"product-template\" id=\"ProductSection-product-template\" class=\"product-template__container page-width\"\u003e\n\u003cdiv class=\"grid product-single product-single--medium-image\"\u003e\n\u003cdiv class=\"grid__item medium-up--one-half\"\u003e\n\u003cdiv class=\"product-single__description rte\"\u003e\n\u003cp\u003e- 100% New Casting, Assembled with USA Made Valves and Springs\u003c\/p\u003e\n\u003cp\u003e- Includes premium heavy duty hardened valve seat inserts\u003c\/p\u003e\n\u003cp\u003e- No Core Charge\/No Return Shipping\u003c\/p\u003e\n\u003cp\u003e- All finish machine work and assembly performed in house, on state of the art equipment\u003c\/p\u003e\n\u003cp\u003e- 12 month warranty against defects in materials and workmanship\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/main\u003e\n\u003ch2\u003eDescription:\u003c\/h2\u003e\n\u003cp\u003eKill Devil Diesel is proud to offer our 100% New 6.7 Powerstroke cylinder heads.  We start off with brand new Genuine Ford cylinder heads.  We then perform all final machine work in house - including o-ring, geometry blueprinting (ensuring the valve recession, valve tip height, valve seat profile, surface finish etc is machined in spec) then assemble by hand right here in our NC facility.  We offer CNC porting, as well as Nitrided Inconel valves and USA made Beehive springs.\u003c\/p\u003e","brand":"Kill Devil Diesel","offers":[{"title":"Default Title","offer_id":47469065961716,"sku":null,"price":2999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/9359\/4356\/files\/6.7PowerstrokeHeads_869x869_2882f1f6-5a47-41a2-acde-e444a33cdd85.webp?v=1768862233","url":"https:\/\/georgiadieselgaragellc.myshopify.com\/products\/kdd-6-7-powerstroke-o-ring-cylinder-heads","provider":"Georgia Diesel Garage LLC","version":"1.0","type":"link"}