DFC Diesel SS5904507STAUSOALB Street Series Standard/Auto Speed Of Air Long Block | 2004.5-2007 Dodge RAM 5.9L Cummins

Features:

• 5-Year / 100,000 Mile Warranty
• Built for Work Trucks & Daily Drivers
• Includes Cylinder Head & Gasket Kit
• New Pistons, Rings, Valves, and Guides
• CNC Machined to OEM+ Specifications
• Gapless Total Seal Piston Rings Included
• ARP or OptiTorque Head Studs Standard
• MLS Multi-Layer Steel Head Gasket
• Enhanced Gasket Sealing for Reliability
• Factory-Spec Rockers and Pushrods Set
• Improved Piston Cooling for Longevity
• Uses All Name-Brand OEM-Quality Parts

Power You Can Rely On Every Time You Turn The Key

If you’re ready to bring new life into your 2004.5-2007 Dodge Cummins, the DFC Diesel SS5904507STAUSOALB Street Series Long Block delivers the performance and dependability your truck deserves. Built with the everyday diesel enthusiast in mind, this engine is ideal for work trucks, daily drivers, and anyone who needs something tougher than stock. It comes packed with upgrades to fix the common trouble spots most Cummins owners run into over time, like head gasket issues and piston failures. You get premium components like ARP or OptiTorque head studs, a high-performance Cometic MLS head gasket, and Total Seal gapless rings that give you tighter sealing and longer engine life. This long block is more than just a rebuild, it’s a real upgrade over factory specs, using only new, name-brand parts that meet or exceed OEM standards. And with a 5-year, 100,000-mile warranty, you know this thing is built to handle serious use without giving up on you. Whether you’re hauling gear to the jobsite or towing your toys out to the dunes, this engine brings the confidence you want every time you hit the key.

Engineered With Precision For Daily Performance And Longevity

Under the hood, the Street Series Long Block is all about solid craftsmanship and high-end components that work together seamlessly. Each unit is Rottler CNC-machined for exact tolerances, bored to accept oversized pistons, and assembled with meticulous attention to detail. The block includes all-new pistons, rings, bearings, gaskets, and seals, plus a remanufactured cylinder head that’s fully rebuilt with new valves, guides, seats, and stem seals. Even the rocker arms and pushrods are pre-set to factory specs so installation is straightforward and stress-free. This long block is engineered to reduce piston cooling issues, which helps prevent the kind of failures caused by injector problems in high-mileage engines. The Total Seal gapless piston rings reduce blow-by and oil consumption while maintaining strong compression under load. From top to bottom, this Street Series model is designed to provide smooth, reliable performance for years, making it the perfect solution for those who want upgraded durability without going full race build.

Fits: 2004.5, 2005, 2006, 2007 Dodge RAM 5.9L Cummins

Notes:

• This is a remanufactured long block, not a complete engine.
• Street Series is best suited for daily drivers and light-duty work trucks.
• Built to correct known failure points common in 5.9L Cummins engines.
• Comes preset with rockers and pushrods to factory specs for easier installation.
• Uses oversized pistons that require matching bore specifications.
• Requires transferring some components like the turbo, injection pump, and accessories from your existing engine.
• Compatible with both standard and automatic transmissions.
• Machined and assembled in North America using Rottler CNC equipment.
• All parts are new or OEM-equivalent, no recycled internals used.
• Backed by a 5-year, 160,000 km (100,000 mi) limited warranty.
• Core return is required and may be subject to inspection for acceptance.
• Intended for vehicles built between mid-2004 and 2007 with the 5.9L Cummins platform.

Street Series vs Tow/Haul vs Tow/Haul HD

• Street Series: Ideal for daily driving, light work, and diesel enthusiasts. Focuses on reliability upgrades over stock, with head stud and sealing improvements.

• Tow/Haul Series: All Street upgrades plus added performance parts for higher load and towing power. Supports builds up to ~700 HP.

• Tow/Haul HD Series: The most robust option. Adds heavy-duty internals like Wagler rods and a balanced rotating assembly for 800+ HP capability.

Standard/Auto vs Standard vs Auto

• Standard/Auto: Compatible with both manual and automatic transmissions. Offers the most flexibility.

• Standard: Built specifically for manual transmission configurations.

• Auto: Built specifically for automatic transmission setups.