591998SOASB Speed of Air Short Block (STD/AUTO) 24V Storm Block

Features:

• Patented Speed of Air piston technology
• CNC-machined piston turbulators improve combustion efficiency
• Thermal barrier coated piston crowns
• Anti-friction coated piston skirts
• Potential fuel economy gains up to 25%+
• Lowers EGTs by 100-200 degrees
• Improves torque, horsepower, and pulling power
• Promotes smoother, quieter engine operation
• Reduced soot supports longer engine life
• Includes complete installation gasket kit
• Includes front and rear covers
• Designed for 1998 5.9L Cummins applications

Give Your Cummins A Smarter Foundation For Power

If you are rebuilding your 1998 Dodge Ram 2500 or 3500, the DFC Diesel 591998SOASB Speed of Air Short Block gives you an opportunity to improve more than just the condition of your engine. This new short block combines DFC Diesel build quality with Speed of Air Hyperformance piston technology designed to make better use of every combustion event. More efficient combustion can translate into improved torque, horsepower, pulling power, and drivability, giving your Cummins a stronger response when accelerating or working under load. Speed of Air testing has also documented fuel economy improvements of up to 15% to 25% or more, along with EGT reductions of 100 to 200 degrees under tested conditions. Cleaner combustion produces less soot and visible exhaust, which can help reduce contamination inside the engine and support longer service life. The assembly arrives with the front cover and seal, rear cover and main seal, oil pan, internal components, complete installation gasket kit, and important installation instructions. Instead of settling for a conventional replacement during your rebuild, this short block gives your 5.9L Cummins a performance focused foundation backed by technology developed to improve combustion where it matters most.

Precision Piston Technology Changes The Combustion Process

At the heart of this DFC Diesel short block are Speed of Air Hyperformance pistons featuring patented CNC machined turbulators precisely formed into each piston crown. These small indentations influence the boundary layer between the air and fuel mixture, flame front, and combustion chamber surfaces, allowing the flame front to burn closer to the cooler metal walls. By improving how combustion develops inside the cylinder, the technology is designed to extract more useful energy from the fuel while reducing soot, emissions, and wasted heat. The piston crowns also receive an aerospace proven thermal barrier coating that helps retain heat within the combustion process, contributing to greater efficiency and usable power. An anti friction coating on the piston skirts reduces abrasion and resistance as the pistons travel through the cylinders, adding another layer of efficiency and durability. Speed of Air piston technology is manufactured to exact tolerances under ISO 9001 quality standards, with custom piston kits produced by licensed manufacturer United Engine and Machine Co. The result is a carefully engineered short block that brings advanced piston design, specialized coatings, and complete assembly components together for a more efficient approach to rebuilding a 1998 5.9L Cummins.

Fitment: 1998 Dodge RAM 2500/3500 5.9L Cummins 12V

Notes:

• Designed for 1998 Dodge Ram 2500/3500 5.9L Cummins applications.
• Confirm engine configuration and application before ordering.
• This is a complete short block assembly, not a complete engine.
• Assembly includes front cover, rear cover, and oil pan.
• A complete installation gasket kit is included.
• Review all supplied installation instructions before assembly.
• Professional installation is recommended for proper engine setup.
• Speed of Air performance gains are based on documented testing.
• Actual fuel economy and performance results may vary.
• Lower EGT and emissions results depend on operating conditions.
• Product shipping weight is approximately 828 pounds.
• California Proposition 65 warning applies to this product.
• Core charge: $2,900