KORE600306STAU18SB Kore Series Short Block (Std/Auto)

Features:

• Remanufactured short block engine
• 18mm head dowels for proper fitment
• Professionally machined using Rottler equipment
• Tighter tolerances than OEM specifications
• All new pistons, rings, bearings, and rods
• Silicone bead added at main caps
• Reinforced internals for smoother running engine
• Includes oil pan and complete gasket kit
• Built in ISO 9001:2015 certified facility
• 1 year unlimited mileage warranty

A Solid Foundation For Your 6.0L Rebuild

Anyone who has owned a 6.0L Powerstroke long enough knows the reputation this engine carries, and a proper rebuild starts with a short block you can actually trust. The DFC Diesel KORE Series Short Block gives 2003-2006 Super Duty owners a remanufactured foundation built to correct the weak points that plague these engines from the factory. During the build, DFC specifically targets known failure areas like the main caps, adding a bead of silicone at that joint to eliminate a common leak path before it ever becomes a problem. Every short block is machined using Rottler equipment, delivering tolerances tighter than OEM specifications, and rebuilt with near identical weight piston and connecting rod assemblies for a smoother, more balanced running engine. Inside, you're getting all new pistons, rings, bearings, and rods, giving your rebuild real internal integrity rather than reused, worn components. The engine ships with 18mm head dowels, an important detail for anyone matching this block to the correct head gasket and cylinder head setup. Whether you're finally addressing a tired 6.0L for good or building toward a more serious future upgrade, this short block gives you a dependable place to start.

Precision Machining With Purposeful Upgrades To Known Weak Points

The DFC Diesel KORE600306STAU18SB is a remanufactured short block engineered specifically for 2003-2006 Ford F250 and F350 Super Duty trucks equipped with the 6.0L Powerstroke engine, compatible with both standard and automatic transmission applications. Every short block is machined using Rottler equipment, delivering tolerances that exceed OEM specifications throughout the build. During remanufacturing, DFC addresses known risk points on this platform, including adding a bead of silicone at the main caps to help eliminate a common source of leaking. The short block includes all new pistons, rings, bearings, and rods, along with reinforced internals designed to reduce noise and improve overall engine balance. This short block is built with 18mm head dowels, so confirming your cylinder head and gasket setup matches this dowel specification is an important step before installation. The package includes a new oil pan and a complete gasket kit to support installation, though as a short block it does not include the cylinder head, which must be sourced or reused separately. Every engine is manufactured in an ISO 9001:2015 certified facility and backed by a 1 year, unlimited mileage manufacturer warranty.

Fitment: 2003, 2004, 2005, 2006 Ford F250/F350 Super Duty 6.0L Powerstroke, 18mm head dowels

Notes:

• This is a short block only, cylinder head not included
• Built with 18mm head dowels, confirm head and gasket compatibility before ordering
• Component brands may vary by build based on parts availability, cannot be specially requested
• $500 crate charge/$2,800 core charge 
• Engine shipping crate must be returned with core engine for full core credit
• Manufacturer warranty: 1 year, unlimited mileage
• Oil cooler replacement highly recommended, mandatory if prior engine had a bearing failure
• Injector replacement highly recommended on higher mileage or contaminated fuel engines
• Turbocharger replacement recommended over 125K miles, mandatory if shaft play present or engine was dusted
• Water pump replacement highly recommended if engine has over 125K miles
• Evans Waterless Coolant recommended upgrade for corrosion and boilover prevention
• This product cannot be shipped to California

Install Instructions