DFC Diesel SS6004AUSOALB Street Series Auto Speed Of Air Long Block | 2004 Ford F250/F350 6.0L Powerstroke

Features:

• Built for daily driving and work use
• Includes ARP or OptiTorque head studs
• Total Seal gapless piston rings included
• Machined using advanced Rottler equipment
• All new pistons, rings, and bearings
• Improved sealing in known leak areas
• Remanufactured heads with new components
• ARP connecting rod bolts pre-installed
• Complete top-end gasket kit included
• Block bored for oversized pistons
• Ideal for 2004 Ford F250 and F350
• Backed by 5-year, 160,000km warranty

Built To Outwork Stock And Keep You Moving

If you're tired of dealing with weak spots in your stock 6.0L Powerstroke, the DFC Street Series Long Block is exactly what your 2004 F250 or F350 needs to stay on the road and out of the shop. This engine was designed with real truck owners in mind, guys who tow, commute, and depend on their rigs every single day. It's not just a replacement, it's a serious upgrade that targets known failure points in the factory engine. With improved sealing in common leak zones and heavy-duty internal components, this long block was made to handle daily driving with confidence. It comes pre-assembled with high-quality ARP or OptiTorque head studs for added durability under pressure, plus ARP rod bolts to keep everything buttoned up where it counts. Whether you’re hauling tools to the jobsite or racking up highway miles, this engine gives you the peace of mind that your truck won’t let you down. And with DFC’s unmatched 5-year, 160,000 kilometer warranty, you’re getting support that lasts as long as the engine does.

Factory Precision Meets Purpose Built Reliability

The DFC SS6004AUSOALB Street Series Long Block is a remanufactured engine that’s been carefully rebuilt to go well beyond stock specs. Every block is professionally machined using some of the most advanced Rottler equipment in North America, then bored to fit oversized pistons for better fitment and performance. The internals are completely new, including pistons, rings, bearings, gaskets, and seals, so nothing used or reconditioned makes its way inside. DFC also includes Total Seal gapless piston rings to help improve combustion and minimize blow-by, giving you more efficient power and longer engine life. The cylinder heads are remanufactured with new valves, guides, seats, and stem seals, and each one is magnafluxed and resurfaced to meet precise tolerances. A full top-end gasket kit is included to complete your installation, and all rockers and pushrods come pre-installed to save time in the bay. With quality name-brand parts throughout and a build process that meets or exceeds OEM standards, this engine is a reliable solution for any driver looking to restore confidence in their 2004 6.0L Powerstroke.

Fits: 2004 Ford F250/F350 6.0L Powerstroke

Notes:

• Engine is designed for daily drivers and work trucks
• Targets and upgrades common 6.0L Powerstroke failure points
• Built using advanced Rottler machining equipment
• Includes Total Seal gapless piston rings for better compression
• Comes with ARP 2000 or OptiTorque head studs depending on availability
• Includes ARP connecting rod bolts for added bottom-end strength
• All internal components are brand new, not reconditioned
• Remanufactured cylinder heads include all new wear components
• Improved sealing methods in areas known for oil leaks
• Ideal for 2004 Ford F250 and F350 6.0L Powerstroke applications
• Comes with complete top-end gasket kit for final assembly
• Backed by a 5-year or 160,000 kilometer warranty

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.