DFC Diesel TH60050618AUSOALB Tow/Haul Series Auto Speed Of Air Long Block | 2005-2006 Ford F250/F350 6.0L Powerstroke

Features:

• 18MM Head Dowell
• Built for up to 600 horsepower
• Ideal for towing and hauling demands
• Includes complete long block assembly
• O-ringed heads for improved sealing
• Stage 2 billet camshaft installed
• Ceramic-coated piston crowns for durability
• Dry film-coated piston skirts reduce friction
• ARP 2000 or OptiTorque head studs
• ARP connecting rod bolts included
• Manton heavy-duty pushrods pre-installed
• Backed by 5-year, 160,000 km warranty
• Rebuilt with all new OEM-grade components

Get The Most Out Of Your 6.0 Powerstroke

If you’re serious about towing, hauling, or putting down reliable power, the DFC Tow/Haul Series Long Block is the upgrade your 2005-2006 Ford F-250 or F-350 6.0L Powerstroke deserves. Built to handle up to 600 horsepower at the flywheel, this engine is purpose-built for drivers who demand more out of their trucks without sacrificing durability. Whether you're pulling a loaded trailer through mountain passes or stacking miles on the job site, this engine is designed to keep your truck working harder for longer. The Tow/Haul Series comes fully loaded with premium internal components like a stage 2 billet camshaft, ARP or OptiTorque head studs, and Manton heavy-duty pushrods, all of which work together to boost strength and reliability under heavy load. Every engine includes ceramic-coated piston crowns and dry film-coated skirts for better heat resistance and reduced friction, giving you peace of mind when the pressure’s on. What really sets this engine apart is how it blends performance and longevity, backed by a 5-year, 160,000 km warranty that speaks for itself. It's not just a replacement, it's a serious upgrade designed to meet the demands of real-world truck owners.

Built With Premium Parts And Proven Engineering

The DFC Diesel Tow/Haul Series Long Block is a fully remanufactured engine designed for high-load applications and long-term reliability. This build includes a professionally machined and bored block paired with new OEM-grade pistons, rings, and gaskets to meet or exceed factory specifications. The heads are resurfaced, magnafluxed, and fitted with all new valves, seats, guides, and stem seals for consistent performance and durability. Each long block comes with a full top-end gasket kit, ARP connecting rod bolts, and a complete short block assembly, making it ready for install right out of the crate. Chamfered piston bowls help optimize combustion while the O-ringed heads offer a more secure seal under high boost conditions. The use of Total Seal gapless piston rings improves compression and reduces blow-by, making the engine more efficient and powerful under strain. This configuration delivers everything included in DFC’s Street Series and adds key upgrades tailored for trucks that work hard day in and day out. It’s a thoughtfully engineered solution for owners looking to restore confidence and capability to their Powerstroke platform.

Fits: 2005, 2006 Ford F250/F350 6.0L Powerstroke

Notes:

• Built for 2005-2006 Ford F-250 and F-350 with 6.0L Powerstroke
• Rated for up to 600 horsepower at the flywheel
• Designed specifically for towing, hauling, and heavy-duty use
• Includes all upgrades from the DFC Street Series engine
• Backed by a 5-year, 160,000 km manufacturer warranty
• Long block assembly includes cylinder heads and short block
• Professional machining and boring for next oversized pistons
• Uses only new OEM or equivalent name-brand components
• Engine is shipped with rockers and pushrods pre-installed
• Includes ARP or OptiTorque head studs depending on availability
• Best suited for applications needing added power and durability
• Not a turn-key engine – additional components may be required

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.