KORE590304STAULB Kore Series Long Block (STD/AUTO)

Features:

• New Mahle pistons for dependable performance
• New Mahle main and rod 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

Put Proven Quality Behind Every Working Mile

When your Cummins has earned its miles and the original engine is ready for retirement, a well built long block can get the truck back to doing what you bought it for. The DFC Diesel KORE590304STAULB KORE Series Long Block gives 2003-2004 Ram 2500 and 3500 owners a cost conscious alternative to purchasing a new engine without gambling on an unknown used replacement. DFC equips the assembly with new Mahle pistons, Mahle main bearings, Mahle rod bearings, and Total Seal gapless rings, providing quality components where reliability matters most. A remanufactured cylinder head is already part of the package, along with new valves, seats, guides, and other supporting components that help prepare the engine for dependable service. The rockers and pushrods come preset to factory specifications, while the included front and rear covers, oil pan, and complete gasket kit help reduce the number of pieces your shop needs to source separately. Compatibility with most existing components and upgrades also makes it easier to reuse suitable hardware from your current setup, which can simplify a daily driver restoration or commercial truck repair. With a 5 year or 160000 kilometer warranty behind the assembly, the KORE Series offers a practical way to put your 5.9L Cummins back on the road with quality parts and professional preparation already handled.

Tighter Tolerances Start With Better Machine Work

A dependable remanufactured engine starts at the machine shop, and DFC prepares the KORE590304STAULB using advanced Rottler equipment designed for precise and repeatable engine machining. The cylinder block is blueprinted using a Rottler F69 ATC to tolerances that DFC states are tighter than original OEM specifications, helping establish a consistent foundation before the engine is assembled. New Mahle pistons are paired with Total Seal gapless rings and new Mahle main and rod bearings, replacing critical wear components throughout the lower assembly. The remanufactured cylinder head receives new valves, springs, hardened seats, stem seals, and cast guides, giving the upper portion of the long block fresh components in several important areas. DFC also uses improved gasket sealing methods around known leakage areas, while an MLS head gasket upgrade is available for customers who want that configuration for their build. New front and rear main seals are installed, and a complete gasket set is supplied for the remaining long block installation process. With the valvetrain preset to factory specifications and major engine components already assembled, this KORE Series long block provides a carefully prepared replacement foundation for 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.
• New front and rear main seals included.
• DFC advertises a 5 year 100000 mile warranty.
• Listed shipping weight is 828 pounds.
• Core Charge: $2,900.