DFC Diesel SS671719SOALB Street Series Speed Of Air Long Block | 2017-2019 Ford F250/F350 6.7L Powerstroke

Features:

• 5-year, 160,000 km limited warranty
• Built to exceed OEM specifications
• Complete long block with cylinder heads
• Includes full top end gasket kit
• All new pistons, rings, and bearings
• Re-manufactured heads with new valves and guides
• ARP or OptiTorque head studs installed
• Total Seal gapless piston rings standard
• Professionally machined and bored engine block
• Factory-spec preset rockers for easy install
• Designed for work trucks and daily drivers
• Upgraded components to address common failures

Bring New Life To Your Powerstroke With Confidence

When it is time to replace your 2017-2019 Ford F250 or F350 6.7L Powerstroke engine, the DFC Diesel SS671719SOALB Street Series Speed Of Air Long Block offers the kind of quality and reliability you can count on every day. Built for work trucks, daily drivers, and weekend haulers, this engine goes far beyond a simple factory replacement by addressing common failure points and upgrading key internal components. Backed by an industry-leading 5-year, 160,000 km warranty, it gives you the peace of mind to put your truck back to work without hesitation. Every unit is re-manufactured to exceed OEM standards, ensuring smooth performance and long-term durability even under heavy use. The inclusion of ARP or OptiTorque head studs provides added strength in high-stress situations, giving you the extra insurance needed for towing and hauling. With new pistons, rings, bearings, and gaskets throughout, you are getting a fresh start under the hood instead of recycled parts. This is more than a replacement engine; it is a complete solution designed to keep your Powerstroke performing at its best for years to come.

Engineered For Strength And Built With Precision

The DFC Diesel SS671719SOALB Street Series Speed Of Air Long Block is a re-manufactured 6.7L Powerstroke engine designed with precision machining and premium components from top to bottom. The block is professionally machined and bored to accept the next oversized piston, ensuring perfect fitment and long-term reliability. Each engine features all new pistons, rings, bearings, and gaskets, as well as re-manufactured cylinder heads equipped with new valves, guides, and stem seals. Total Seal gapless piston rings come standard, improving compression and reducing blow-by for cleaner, more efficient operation. Rockers are preset to factory specifications, making installation straightforward and minimizing setup time. The long block includes a complete top end gasket kit so you can finish the install without hunting down extra parts. With advanced Rottler machining equipment used on every build, consistency and accuracy are held to the highest standard. Designed specifically for the demands of the 2017-2019 Ford F250 and F350, this engine delivers the strength and dependability your truck needs to handle hard work and heavy loads.

Fits: 2017, 2018, 2019 Ford F250/F350 6.7L Powerstroke

Notes:

• Engine is a long block, not a complete drop-in
• Designed specifically for 2017-2019 Ford F250 and F350 6.7L Powerstroke
• Includes cylinder heads and complete short block assembly
• Comes with a full top end gasket kit for installation
• Requires reuse or replacement of external components: turbo, fuel system, sensors
• Built with ARP or OptiTorque head studs depending on availability
• Backed by a 5-year, 160,000 km (100,000 mi) limited warranty
• Machined and assembled to exceed OEM specifications
• Intended for work trucks, daily driving, and moderate towing applications
• Professional installation recommended to maintain warranty coverage

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.