DFC Diesel SS591998SOALB Street Series Speed of Air Long Block (STD/Auto) | 1998 Dodge RAM 5.9L Cummins (24V Storm Block)

Features:

• Fits 1998 5.9L Cummins 24V Storm Block
• Includes short block and cylinder head
• Preset rockers and pushrods to factory specs
• Total Seal gapless piston rings included
• Cometic MLS multi-layer steel head gasket
• Professionally machined using Rottler equipment
• Improved gasket sealing in common leak areas
• All-new OEM or equivalent internal components
• Increased piston cooling for better reliability
• Includes complete top-end gasket kit
• Built for daily driving and work applications
• Backed by 5-year / 160,000 km warranty

A Smarter Way to Rebuild Your 24-Valve Cummins

If your 1998 Ram 5.9L Cummins (24V Storm Block) is due for a major refresh, the DFC Diesel SS591998SOALB Street Series Long Block delivers a serious upgrade without sacrificing the drivability you rely on. This long block isn’t just a replacement—it’s a full, professionally remanufactured engine built from the block up with brand-new internals and thoughtful improvements over the factory design. Whether your truck sees daily driving, weekend hauling, or moderate performance tuning, this Street Series engine strikes the ideal balance of strength, reliability, and longevity. It includes a fully machined short block, a reman cylinder head, and a complete top-end gasket kit, with all rockers and pushrods preset to spec so you’re ready to drop it in and go.

Better Than Stock, Backed with Confidence

What sets this long block apart is the attention to detail DFC brings to every build. Each engine is assembled using high-quality, name-brand parts—including new pistons, rings, bearings, valves, and seals—and features Total Seal gapless piston rings for improved compression and long-term performance. A Cometic multi-layer steel head gasket and ARP or OptiTorque head studs come standard, locking the head down tight for added peace of mind under pressure. Machining is handled using state-of-the-art Rottler equipment, ensuring perfect tolerances and surface finishes throughout the build. From improved gasket sealing in common leak points to increased piston cooling for better injector protection, every decision in this engine’s design is focused on reliability. And with a 5-year/160,000 km (100,000 mi) warranty, you can install it knowing you're covered mile after mile.

Fits: 1998 Dodge RAM 5.9L Cummins

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