Built to exceed factory standards, the DFC Diesel Street Series Long Block for the 6.7L Cummins (2007.5–2018) is designed for superior reliability in work trucks, daily drivers, and performance applications. Backed by a 5-year / 160,000 km warranty, this remanufactured engine features premium components, advanced machining, and key upgrades that address common failure points in stock Cummins engines.

Key Features:

• 5-Year / 160,000 km (100,000 mi) Warranty: Industry-leading coverage on parts and workmanship.

• Upgraded Fasteners: Includes ARP Series 2000 or OptiTorque head studs (based on availability).

• All-New Components: Pistons, rings, bearings, seals, gaskets, valves, valve springs, cast guides, and seats.

• Balanced Rotating Assemblies: Matched piston and rod weights for reduced vibration and smoother operation.

• Precision Machining: Rottler equipment ensures tighter-than-OEM tolerances.

• Total Seal Gapless Rings: Improve sealing and minimize blow-by for longer engine life.

• SBI Valve Seats & Guides: Oversized for improved durability and crack prevention.

• Silicone Sealing Upgrades: Front cover and oil pan sealed with silicone to prevent leaks common in OEM gaskets.

• Digital Torque Recording: Fasteners torqued with digital tracking to ensure proper clamp loads and long-term reliability.

• O-Ringed Cylinder Head Option: Upgradeable for additional sealing in high-performance or heavy-duty use.

What’s Included:

• Fully assembled long block (short block + remanufactured cylinder head)

• Complete top-end gasket kit

• Rockers and pushrods pre-installed to factory specifications

• ARP Series 2000 or OptiTorque head studs (based on availability)

Vehicle Fitment:

• 2007.5–2018 Dodge Ram 2500 / 3500 / 4500 / 5500

• Equipped with 6.7L 24-Valve Cummins Diesel Engine

• Compatible with G56 Manual or 68RFE Automatic Transmission