TH590002SOALB Tow/Haul Series Speed of Air Long Block (STD/Auto)

Features:

• Fits 2000–2002 Dodge Ram 5.9L 24V Cummins
• Built for towing and performance up to 700 HP
• Includes all Street Series engine upgrades
• Stage 3 camshaft for improved power delivery
• 103lb heavy-duty valve springs for high RPM use
• Manton HD pushrods for added strength
• Cometic MLS head gasket set included
• Speed of Air Hyperformance piston technology
• ARP or OptiTorque head studs installed
• Total Seal gapless piston rings standard
• Ceramic-coated piston crowns reduce heat stress
• Backed by 5-year, 100,000-mile warranty

Built for the Weight, Tuned for the Road

When your 2000–2002 Dodge Ram 5.9L Cummins pulls heavy loads or runs with added power, you need more than a factory replacement—you need a purpose-built solution. That’s where the DFC Diesel Tow/Haul Series Speed of Air Long Block comes in. This engine is a serious step up from stock, engineered for the kind of daily towing, hauling, and tuned performance that demands durability without sacrificing drivability. Based on the foundation of the Street Series, the Tow/Haul version takes things further with upgrades like a Stage 3 camshaft, 103lb heavy-duty valve springs, and Manton HD pushrods—all designed to hold up under load and extend the powerband. It’s the kind of engine you can count on when pulling heavy trailers, climbing long grades, or putting extra torque to the ground with confidence.

Smarter Combustion, Stronger Components, Real Results

At the core of this build are Speed of Air™ Hyperformance pistons, equipped with CNC-machined turbulators and aerospace-grade coatings that improve combustion efficiency, reduce EGTs, and minimize emissions. That means you get a cleaner, more responsive engine with better low-end torque and reduced stress on the turbo under load. Inside, Total Seal® gapless rings keep compression tight and oil clean, while ARP Series 2000 or OptiTorque head studs lock everything down under high boost. The Cometic MLS head gasket and bolt-in aluminum freeze plug help eliminate common failure points, especially under high stress. This long block arrives ready to install, complete with a fully assembled short block, cylinder head, top-end gasket kit, and all valvetrain components preset to spec. If you rely on your Cummins to haul with power and run reliably day in and day out, this engine was built to exceed those expectations—and then some.

Fits: 2000, 2001, 2002 Dodge Ram 5.9L Cummins 24V

Product Image Note: Some images may be representative.