DFC Diesel SS6004STSOALB Street Series Standard Speed Of Air Long Block | 2004 Ford F250/F350 6.0L Powerstroke

Features:

• Built for daily driving and work trucks
• Includes ARP or OptiTorque head studs
• ARP connecting rod bolts for added strength
• Total Seal gapless piston rings installed
• All new OEM or equivalent internal parts
• Machined with advanced Rottler equipment
• Improved sealing in known leak-prone areas
• Remanufactured heads with all new components
• Block bored for oversized piston fitment
• Complete top-end gasket kit included
• Ideal for 2004 F250 and F350 6.0L trucks
• Covered by 5-year, 160,000km warranty

This Is The Engine That Solves The Problem

If your 2004 F250 or F350 has been giving you trouble, it’s probably not your fault, it’s the factory engine design. The DFC Street Series Standard Speed Long Block is built to replace those weak points with something stronger, smoother, and made to last. Whether you’re behind the wheel of a workhorse or daily driver, this engine gives you the kind of peace of mind that stock just doesn’t offer. It’s packed with smart upgrades in all the right places, from improved gasket sealing methods to name-brand internals built to handle daily demands. DFC designed this build for real-world use, not just showroom numbers, so you can count on it whether you're hauling a load or running errands. It comes pre-assembled with ARP or OptiTorque head studs and ARP connecting rod bolts, so everything underneath is locked down tight and ready to handle pressure. The best part? You get that reliability backed by a 5-year, 160,000 kilometer warranty that’s one of the best in North America.

A Purpose Built Solution That Exceeds Factory Standards

The DFC Diesel SS6004STSOALB Street Series Long Block is a fully remanufactured drop-in replacement built for long-term reliability. Each block is carefully machined and bored to accept oversized pistons, improving sealing, efficiency, and combustion across the board. Inside, you'll find all new OEM or equivalent parts including pistons, rings, bearings, gaskets, and seals, all selected for consistency and strength. DFC also includes Total Seal gapless piston rings as a standard feature, reducing blow-by and helping the engine maintain consistent compression over time. The heads are remanufactured with new valves, springs, seats, stem seals, and guides, then magnafluxed and resurfaced to ensure structural integrity and proper fitment. Assembly includes a complete top-end gasket kit and pre-installed rockers and pushrods to simplify installation. With ARP or OptiTorque head studs and ARP rod bolts installed, this engine is ready to perform under the demands of towing, hauling, or daily driving. It’s a dependable, precision-built long block engineered specifically for the 2004 6.0L Powerstroke platform.

Fits: 2004 Ford F250/F350 6.0L Powerstroke

Notes:

• Designed for 2004 Ford F250 and F350 6.0L Powerstroke
• Intended for daily drivers, work trucks, and diesel enthusiasts
• Upgrades common failure points found in stock 6.0L engines
• Includes either ARP 2000 or OptiTorque head studs based on availability
• Comes standard with ARP connecting rod bolts
• Features Total Seal gapless piston rings to reduce blow-by
• All pistons, rings, gaskets, and bearings are brand new
• Machined using advanced Rottler equipment for precision
• Improved sealing methods in areas prone to leakage
• Remanufactured cylinder heads include all new wear components
• Rockers and pushrods come pre-installed for convenience
• 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.