{"product_id":"kdd-7-3-powerstroke-cylinder-head-single","title":"KDD 7.3 Powerstroke Cylinder Heads","description":"\u003cp\u003e\u003cem\u003eLead Times Apply\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand-selected factory castings\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erigorously inspected for top quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRiff Raff Stainless Injector Cups\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estandard, eliminating brass cup failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Made in the USA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom start to finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened high-nickel valve seat inserts\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eiron matrix valve guides\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e21-4N HD Stainless Nitrided Valves\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor superior longevity and wear resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHD Performance Springs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith extra pressure for heavy towing, higher boost, and upgraded injectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision CNC machining and in-house assembly\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensure perfect fitment and reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO-ringed heads with Cometic MLX gaskets\u003c\/strong\u003e, permanently solving head gasket failures.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNo Core Charge, No Return Shipping.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-month warranty\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eagainst defects in materials and workmanship.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eKill Devil Diesel’s 7.3 Powerstroke cylinder heads are built for maximum reliability, longevity, and performance. Every head is meticulously machined in-house on state-of-the-art CNC equipment, hand-assembled, and rigorously inspected to exceed OEM durability.\u003c\/p\u003e\n\u003cp\u003eKDD starts with only the best factory Ford castings, which undergo a multi-step inspection process, including chemical cleaning (to prevent abrasive contamination), magnaflux crack detection, and pressure testing. Once qualified, each head is:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMachined for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehardened high-nickel valve seats\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(solving factory wear and cracking issues).\u003c\/li\u003e\n\u003cli\u003eResurfaced on a precision\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRMC V40 CNC machine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor a perfect finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO-ringed and paired with Cometic MLX gaskets\u003c\/strong\u003e—a proven solution for preventing head gasket failures.\u003c\/li\u003e\n\u003cli\u003eEquipped with our proprietary\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSerdi-machined valve seat profile\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor optimized airflow and durability.\u003c\/li\u003e\n\u003cli\u003eAssembled with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUSA-made stainless nitrided valves\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRiff Raff stainless injector cups\u003c\/strong\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eKDD HD Performance Springs\u003c\/strong\u003e—all rigorously tested to meet our exacting standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEvery component is engineered to handle\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigher boost, extreme towing, and high-horsepower builds\u003c\/strong\u003e, ensuring your Powerstroke is built to last.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Components \u0026amp; Why KDD Chose Them\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch4\u003e\u003cstrong\u003eValves – Stainless Nitrided for Extreme Durability\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUnlike coated valves,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003enitriding\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a permanent heat-treatment process that strengthens the stainless steel itself, improving hardness, temperature resistance, and reducing friction.  This results in:\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLower friction\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ Cooler operation \u0026amp; reduced engine drag.\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHigher wear resistance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ Ideal for heavy towing, turbo, supercharger, and nitrous applications.\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMade in the USA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom 21-4N stainless steel from the hills of Pennsylvania, exclusively for KDD by an OEM valve supplier.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eValve Springs – Heavy-Duty Performance Springs\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eKDD’s proprietary\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHD valve springs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoffer superior durability over common aftermarket options (similar to the popular  Comp 910). Designed for:\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIncreased spring pressure\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ Supports higher boost \u0026amp; larger injectors.\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMicro-polished \u0026amp; heat-treated\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ Maximum fatigue resistance \u0026amp; longevity.\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePrecision-checked in-house\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ Ensures perfect spring pressures for reliable performance.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eRiff Raff Stainless Injector Cups – Eliminating a Common Weak Point\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eStock brass injector cups are prone to cracking, corrosion, and fuel contamination. KDD equips every 7.3 Powerstroke head with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRiff Raff stainless steel injector cups\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto:\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePrevent failures\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethat cause coolant and fuel mixing.\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eWithstand high temperatures \u0026amp; pressure\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewithout deforming.\u003cbr\u003e✔\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEnsure perfect fitment\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– CNC machined from USA-sourced steel in Washington State.\u003c\/p\u003e\n\u003cp\u003eThese upgrades set\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eKDD 7.3 heads apart from the competition\u003c\/strong\u003e, providing unmatched reliability, strength, and performance.\u003c\/p\u003e\n\u003cp\u003e📌\u003cspan\u003e \u003c\/span\u003e\u003cem\u003ePlease specify if you have an 8- or 10-bolt plenum in the order notes.\u003c\/em\u003e\u003cbr\u003e📌\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eNo Core Charge, No Return Shipping.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis listing is for a pair of cylinder heads.  Contact our support team to ask about custom options such as CNC porting, coated combustion chambers, or custom spring options, etc.  \u003c\/em\u003e\u003c\/p\u003e","brand":"Kill Devil Diesel","offers":[{"title":"Default Title","offer_id":47463849558260,"sku":"73P-CH-400-1","price":2499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/9359\/4356\/files\/73-ps-heads_1080x1080_77839b4f-77a1-44a7-8236-7b60c6cbca07.webp?v=1768785949","url":"https:\/\/georgiadieselgaragellc.myshopify.com\/products\/kdd-7-3-powerstroke-cylinder-head-single","provider":"Georgia Diesel Garage LLC","version":"1.0","type":"link"}