DFC Diesel SS6707512SOALB Street Series Standard/Auto Speed Of Air Long Block | 2007.5-2012 Dodge RAM 6.7L Cummins

Features:

• Built for 2007.5-2012 6.7L Cummins engines
• Compatible with standard or automatic transmissions
• Includes ARP or OptiTorque head studs
• Total Seal gapless piston rings included
• Cometic MLS head gasket for better sealing
• Upgraded gasket sealing in leak-prone areas
• New OEM or better internal components
• Machined using advanced Rottler CNC equipment
• Improved piston cooling to prevent injector damage
• Remanufactured cylinder head with all-new hardware
• Includes complete top-end gasket kit
• 5-year or 160,000 km limited warranty

Keep Your Truck Strong With Every Turn Of The Key

If you're ready to replace your worn-out motor with something built to last, the DFC Street Series Long Block for 2007.5-2012 6.7L Dodge Cummins gives you the power and peace of mind to do just that. Designed for work trucks, daily drivers, and performance-minded owners, this long block is a smart upgrade over stock. It delivers factory-spec reliability with critical improvements in common failure points, so you don’t just get a rebuilt engine, you get a better one. With Total Seal gapless piston rings, improved piston cooling, and upgraded sealing around leak-prone areas, this long block is made to go the distance. Whether you're clocking hours on the highway or towing loads through tough terrain, this engine holds up under pressure. It also includes a complete top-end gasket kit for a smoother install, saving you time in the shop. Backed by a 5-year, 160,000 km warranty, it’s an investment that keeps your truck running strong for the long haul.

Designed With Precision And Rebuilt To Outperform Stock

The DFC Street Series Long Block is more than a remanufactured engine, it’s a comprehensive upgrade built to meet and exceed OEM standards. Each unit is carefully machined using Rottler CNC equipment to ensure accurate tolerances and clean mating surfaces throughout the assembly. The block is bored for over-sized pistons and assembled with all new internals, including pistons, rings, bearings, gaskets, and seals. ARP Series 2000 or OptiTorque head studs are used for maximum clamping force, depending on availability. A Cometic multi-layer steel head gasket comes standard, providing exceptional sealing under high load and temperature. The cylinder head is fully remanufactured with new valves, guides, springs, and seats, then resurfaced and magnafluxed to confirm structural integrity. This long block also includes enhanced piston cooling and improved sealing at factory weak points, giving it a strong edge over typical rebuilds. It's a solid, dependable solution for any Cummins owner who wants power they can count on every day.

Fits: 2007.5, 2008, 2009, 2010, 2011, 2012 Dodge RAM 6.7L Cummins

Notes:

• Designed for 2007.5-2012 6.7L Dodge Cummins engines
• Compatible with both standard and automatic transmissions
• Built for daily drivers, work trucks, and diesel enthusiasts
• Improves upon common failure points found in stock engines
• Uses all new name-brand internal components
• Includes ARP or OptiTorque head studs depending on availability
• Comes standard with Cometic MLS head gasket for better sealing
• Total Seal gapless rings included for improved compression
• Enhanced piston cooling to reduce damage from faulty injectors
• Machined using high-precision Rottler CNC equipment
• Includes complete top-end gasket kit for installation
• Backed by a 5-year or 160,000 km limited 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.