The 6.0L Powerstroke is known for making solid power, but the factory cylinder heads are a well-documented weak point. Cracking around the glow plug bosses and valve seats is extremely common and is one of the leading causes of blown head gaskets on these engines.

The DK Engine Parts DK-FD6.0-18CHL 18mm Loaded Cylinder Head is a direct-fit upgraded replacement designed to solve these problems. It features a new, reinforced casting that strengthens the areas where factory heads commonly fail.

Key Features & Benefits

• New Upgraded Casting — Stronger than stock in the critical glow plug and valve seat areas to resist cracking.
• Fully Loaded & Ready to Install — Comes completely assembled with new nitride valves, valve springs, retainers, keepers, valve stem seals, hardened valve seats, and injector cups already installed. No core charge and no need to transfer parts.
• Precision 18mm Dowel Fitment — Engineered for 2003 – January 15, 2006 6.0L Powerstroke engines using 18mm head dowel pins (typically builds from 9/30/2003 – 1/11/2006).
• O-Ring Ready — The deck surface can be machined for O-ringing (modification/service available separately) for superior head gasket sealing in high-boost or performance applications.
• Rocker Bolt Specification — Uses 8mm rocker assembly bolts (please confirm your current hardware before ordering).

Fitment

• Fits: 2003 – early 2006 Ford 6.0L Powerstroke (18mm dowel pin engines)
  • F-250 / F-350 / F-450 / F-550 Super Duty
  • Excursion (verify dowel size on your specific engine)
• Note: This is the 18mm version. Later 2006–2007 engines typically use 20mm dowels. Always confirm your dowel pin size before ordering.

Sold individually

Why Choose the DK 18mm Loaded Head?

This is not a remanufactured or patched head — it’s a brand-new casting built to address the factory design flaws that have plagued 6.0L owners for years. The loaded assembly saves significant labor time during installation while giving you all-new valvetrain components.

For maximum reliability (especially on tuned trucks or heavy towing applications), we strongly recommend pairing this head with ARP head studs and a quality MLS head gasket, then performing a hot re-torque after initial startup.

Warranty: 1 Year Limited

Replace your cracked or leaking head with a stronger, fully assembled solution and get your 6.0L Powerstroke back on the road with confidence.