DFC Diesel KORE590304STAUSOALB Kore Series Speed of Air Long Block (STD/AUTO) | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

Features:

• Speed of Air piston technology
• New Mahle pistons and bearings
• Total Seal gapless piston rings
• Remanufactured cylinder head included
• Advanced Rottler precision machining
• Blueprinted beyond OEM tolerance specifications
• Improved sealing in common leakage areas
• New valves seats guides and seals
• Factory preset rockers and pushrods
• Complete installation gasket kit included
• Five year 100000 mile warranty
• Fits 2003-2004 5.9L Cummins trucks

Make Your Next Cummins Build Count

There is no reason a necessary engine replacement has to leave your 5.9L Cummins exactly where it started, especially when the truck still has years of work ahead of it. The DFC Diesel KORE590304STAUSOALB KORE Series Speed of Air Long Block gives 2003-2004 Ram 2500 and 3500 owners a cost effective replacement built with quality internals and performance focused piston technology. New Mahle pistons, Mahle main bearings, Mahle rod bearings, and Total Seal gapless rings provide fresh components throughout critical areas of the engine, giving you more confidence when the truck heads back to work. Speed of Air technology adds another dimension to the build, making this configuration appealing for owners who want something beyond a conventional KORE Series replacement. Since the package includes a remanufactured cylinder head, front and rear covers, oil pan, internal components, and preset rockers and pushrods, your shop can spend less time tracking down major pieces before installation. Most existing components and upgrades remain compatible, which makes it easier to transfer suitable parts from your current setup and finish the build around your truck's needs. Add DFC's advertised 5 year or 160000 kilometer warranty, and you have a long block designed to balance value and dependable construction without turning your Cummins rebuild into a bare bones compromise.

Detailed Machine Work Shapes A Better Foundation

The KORE590304STAUSOALB starts with a professionally prepared 5.9L Cummins block that receives precision machining using advanced Rottler equipment. DFC blueprints its cylinder blocks with a Rottler F69 ATC to tolerances the manufacturer states are tighter than OEM specifications, helping establish consistent dimensions before the internal components are assembled. New Mahle pistons are paired with Total Seal gapless rings and new Mahle main and rod bearings, while this particular configuration incorporates Speed of Air technology into the piston package. The remanufactured cylinder head receives new valves, springs, hardened seats, stem seals, and cast guides, replacing important wear components throughout the upper assembly. DFC also applies improved gasket sealing methods in common leakage areas and offers the option to upgrade to an MLS head gasket configuration. New front and rear main seals are included, while the rockers and pushrods arrive preset to factory specifications to reduce additional setup during the installation process. With a complete installation gasket set supplied alongside the assembled engine, this Speed of Air KORE Series long block provides a carefully prepared starting point for rebuilding a 2003-2004 5.9L Cummins.

Fitment: 2003, 2004 Dodge RAM 2500/3500 5.9L Cummins

Notes:

• Designed for 2003-2004 5.9L Cummins applications.
• This is a long block assembly, not a complete engine.
• Includes a remanufactured cylinder head.
• Rockers and pushrods are preset to factory specs.
• Most existing components and upgrades remain compatible.
• Complete installation gasket set is included.
• MLS head gasket upgrade is available.
• Manufacturer states tighter than OEM block tolerances.
• Improved sealing methods target common leak areas.
• DFC advertises a 5 year 100000 mile warranty.
• Listed shipping weight is 828 pounds.
• Confirm Speed of Air configuration before ordering.
• Core Charge: $2,900.