Ford 4.6L DOHC 4V 32V DC Rev 9-Thread Cylinder Heads Pair w/ Cams Mach 1 Cobra A

# 📌 Ford 4.6L DOHC 32V Cylinder Heads — DC Revision — 9-Thread — Complete Matching Pair These are the highly desirable **DB-revision** 4.6L DOHC “C-head” aluminum cylinder heads — the **2005 final updated casting** that addressed multiple long-standing issues found in earlier AF/AG/DA heads. If you’re upgrading a Mach 1, Marauder, Aviator, Cobra, or doing any C-head modular build, these are the heads you want. * * * ## **Condition / Details** - OEM Ford 4.6L DOHC “C-head” aluminum cylinder heads. - **DB revision / Casting #: RF-2C5E-6C064-DC and** **RF2C5E-8C084-DC** - Correct **left + right** updated **2005 castings. Final revision** - **9-thread spark plug holes** (strongest OEM design) - **Complete Matching Pair**: cams, cam caps, valves, springs, retainers, timing gears - Removed from a **good running 2005 Lincoln Aviator 4.6L DOHC 32V** engine - No visible cracks or broken towers - **No** broken exhaust studs all threads in good condition - Cam journals look good and rotate smoothly - These are the **final revision best casting you can buy C-heads** — revised & strengthened, while still plug-and-play with all modular 4V builds. - **Important:** While these were removed from a good running engine they are used cylinder heads. As with any used cylinder head they should be cleaned and inspected by a reputable machine shop before installation * * * ## **📘 Compatibility (Buyer Must Verify)** - 2003–2004 Mustang Mach 1 - 2003–2004 Mercury Marauder - 2003–2005 Lincoln Aviator - 1999–2001 Mustang Cobra (upgrade to 9-thread heads) - Any 4.6L DOHC swap using C-heads * * * ## **🔍 Why These Heads Are Desirable** ### ✔ **Updated 9-Thread Spark Plug Design** Ford’s earlier 4-thread plug holes were known to strip or blow out under normal torque. The DC revision has the **strong 9-thread design**, the correct factory fix. ### ✔ **Improved Coolant Flow Characteristics** Earlier heads suffered from a cooling imbalance around cylinders **7 & 8**, leading to valve-seat issues and ticking. The DC castings incorporate Ford’s revised coolant path improvements to address these hot-spot concerns. ### ✔ **2005-Specific Updated Casting — Bank-Specific by Design** DC heads use updated oil and coolant passage layouts that make them **side-specific**, ensuring proper routing and avoiding the issues found in older AF/AG/DA castings. ### ✔ **Documented OEM Applications** DC heads were found installed on: - 2004 Mach 1 - 2004 Mercury Marauder - 2005 Lincoln Aviator - Some late-run 2004 builds (June–July 2004 engines) - Sold under ford performance catalog part numbers This makes them ideal for **restoration**, **upgrades**, and **performance builds**. * * * ## **🚚 Shipping & Conditions** I ship with care – not like other sellers who just toss parts in a box with hopes and dreams. This pair of cylinder heads will be securely packaged to protect them in transit. Flat rate shipping on these for lower 48 CONUS States. - Sold **as-is**, **no returns accepted** - Buyer must verify fitment - **Heads are heavy** — will ship in two packages - Lower 48 (CONUS) shipping only — message for AK/HI or international.

• Brand: Ford
• Type: Cylinder Head
• Material: Aluminum
• Country of Origin: United States