DFC Diesel KORE661116LMLSOALB Kore Series Speed of Air Long Block (STD/Auto) | 2011-2016 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

Features:

• Speed of Air Hyperformance pistons included
• CNC-machined turbulator dimples on piston tops
• Thermal barrier and anti-friction piston coatings
• Total Seal gapless piston rings included
• Machined with Rottler equipment, better than OEM tolerances
• All new bearings, valves, seals, and gaskets
• Improved gasket sealing in common leak areas
• Complete top end gasket kit included
• Built in ISO 9001:2015 certified facility
• 1 year unlimited mileage warranty

A High Mileage LML Deserves Pistons Built To Do More

Most replacement engines hand you back the same pistons that were in the original, but this DFC Diesel KORE Series long block does something different. It uses Speed of Air Hyperformance pistons, which DFC developed together with Speed of Air for medium duty diesel applications. The piston tops have precise, CNC machined indentations called turbulators, which are often described simply as dimples. According to DFC and Speed of Air, those dimples help the flame front burn closer to the cool metal walls of the combustion chamber, which improves combustion efficiency. DFC says that can mean increased fuel mileage, better drivability and power, and lower operating costs, though results will vary by truck and how you drive it. The pistons also carry an aerospace proven thermal barrier coating on the crowns and an anti friction coating on the skirts, so more heat stays in the combustion process while friction is reduced. Around those pistons you still get the KORE Series build, with Rottler machined tolerances better than OEM, all new bearings and valves, and Total Seal gapless rings as standard. For a 2011-2016 Silverado or Sierra HD owner who wants more than a like for like replacement, this long block gives your LML a smarter set of pistons at KORE Series pricing.

Turbulators And Coatings Engineered Into Every Piston Crown

The DFC Diesel KORE661116LMLSOALB is a remanufactured long block built for 2011-2016 GM Silverado and Sierra 2500HD and 3500HD trucks with the 6.6L Duramax LML, listed for standard and automatic transmission applications. The Speed of Air Hyperformance pistons use patented turbulator indentations that are CNC machined into the piston top and made to exacting tolerances under ISO 9001 quality standards. These create a thinner, well attached boundary layer between the air fuel mixture, its flame front, and the combustion chamber walls. Speed of Air says this lets the flame burn closer to the cool metal walls, which raises combustion efficiency and supports lower fuel consumption, more torque and horsepower, and better pulling power. The pistons are also coated, with a thermal barrier on the crowns and an anti friction coating on the skirts. The rest of the engine follows DFC's KORE Series process, machined on Rottler equipment to tolerances better than OEM, with all new rings, bearings, gaskets, seals, valves, springs, hardened seats, and cast guides. It includes Total Seal gapless piston rings and improved gasket sealing in common leak areas. The engine ships as a short block with the cylinder heads installed and a complete top end gasket kit, built in an ISO 9001:2015 certified facility with a 1 year, unlimited mileage manufacturer warranty.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Built with Speed of Air Hyperformance pistons
• Fuel mileage, power, and torque gains are manufacturer claims, results will vary
• Long block with cylinder heads installed and a complete top end gasket kit included
• New oil cooler required for warranty coverage, sold separately
• New air, oil, and fuel filters required for warranty coverage, sold separately
• New water pump required for warranty coverage, sold separately
• New lubricating oil required for warranty coverage, sold separately
• Warranty is void if not installed with the fluids specified by the manufacturer
• Does not include bolt on components such as valve covers, intake, exhaust, fuel system, or turbo, swap these over from your existing engine
• Does not include front cover, rear cover, oil pump, upper or lower oil pan, oil pickup tube, rocker arms, pushrods, or valve bridges
• Customer is responsible for professionally testing, cleaning, and replacing injectors, injection pumps, and fuel system as needed
• Component brands may vary by build based on parts availability, cannot be specially requested
• $500 shipping charge/$2,800 core charge 
• Engine shipping crate must be returned with core engine for full core credit
• Manufacturer warranty: 1 year, unlimited mileage
• Turbocharger replacement recommended over 125K miles, mandatory if shaft play present or engine was dusted
• Injector replacement highly recommended on higher mileage or contaminated fuel engines
• Evans Waterless Coolant recommended upgrade for corrosion and boilover prevention
• This product cannot be shipped to California

Install Instructions