KORE5904507AUSOALB Kore Series Auto Speed of Air Long Block (325HP)

Features:

• Speed of Air piston technology
• 325 horsepower automatic engine configuration
• 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
• Factory preset rockers and pushrods
• Complete installation gasket kit included
• Five year 100000 mile warranty
• Fits 2004.5-2007 5.9L Cummins trucks

Give Your Cummins Rebuild More Purpose

If you are already investing the time and labor to replace your 5.9L Cummins, choosing the right long block can turn a necessary repair into a meaningful upgrade. The DFC Diesel KORE5904507AUSOALB KORE Series Speed of Air Long Block is built for 2004.5-2007 Ram 2500 and 3500 trucks with the 325 horsepower automatic configuration. What makes this version especially interesting is the addition of Speed of Air technology, giving drivers a performance focused alternative to the standard KORE Series long block. DFC pairs that technology with new Mahle pistons, Mahle main and rod bearings, Total Seal gapless rings, and a remanufactured cylinder head to create a package suited for everything from everyday commuting to regular towing and work duty. You also receive the front and rear covers, oil pan, internal components, and preset rockers and pushrods, so your shop starts with much more than a basic replacement block. The included installation gasket kit further simplifies parts planning, while compatibility with most existing components and upgrades makes it easier to finish the engine around your current truck. With DFC advertising a 5 year or 160000 kilometer warranty, this KORE Series Speed of Air long block gives owners a practical way to combine fresh engine hardware with a more specialized approach to their Cummins rebuild.

Precision Machine Work Supports The Entire Build

Underneath the Speed of Air designation is a carefully prepared KORE Series engine that relies on precision machining and new internal components to establish a dependable foundation. DFC uses advanced Rottler machining equipment and blueprints its cylinder blocks with a Rottler F69 ATC to tolerances the manufacturer states are tighter than OEM specifications. The lower assembly incorporates new Mahle pistons, Total Seal gapless rings, and new Mahle main and rod bearings, while Speed of Air technology distinguishes this configuration from the conventional KORE Series version. Above the block sits a remanufactured cylinder head equipped with new valves, springs, hardened seats, stem seals, and cast guides to refresh critical areas of the valvetrain. DFC also addresses common leakage areas with improved gasket sealing methods and offers an available MLS head gasket upgrade for customers who want that option included in their build. New front and rear main seals provide fresh sealing at both ends of the engine, while the rockers and pushrods arrive preset to factory specifications. Combined with the supplied covers, oil pan, internal components, and complete installation gasket set, the result is a well prepared 325 horsepower automatic long block for 2004.5-2007 5.9L Cummins applications.

Fitment: 2004.5, 2005, 2006, 2007 Dodge RAM 2500/3500 5.9L Cummins

Notes:

• Designed for 2004.5-2007 5.9L Cummins applications.
• Configured for 325 horsepower automatic applications.
• This is a long block assembly, not a complete engine.
• This SKU includes Speed of Air technology.
• 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.
• DFC advertises a 5 year 100000 mile warranty.
• Listed shipping weight is 828 pounds.
• Core Charge: $2,900.