Chevrolet / GMC 6.6L LGH & LML Duramax Turbo Diesel Engines (2011–2017

Chevrolet / GMC 6.6L LGH & LML Duramax Turbo Diesel Engines (2011–2017)

Looking for an expertly vetted, low-mileage replacement powerplant for your heavy-duty fleet truck, commercial rig, or custom diesel conversion? Swap Engine Vault is proud to offer our premium selection of Chevrolet and GMC 6.6L LGH and LML Duramax Turbo Diesel engines.

Sourced exclusively from decommissioned, regularly maintained municipal vehicles, these complete powerplants deliver the relentless torque, heavy-duty hauling capacity, and legendary reliability that full-size truck owners and mechanics demand across both the American and Australian markets.

The Swap Engine Vault Standards: Why Buy From Us?

• Municipality Sourced & Dealership Maintained: Our engines are pulled from fleet-decommissioned municipal vehicles (2011–2017) that have been strictly and routinely serviced—typically directly by certified dealerships.

• Elite Selection Process: We don’t sell just any salvage pull. Only vehicles that run flawlessly and show absolutely zero signs of leakage, fluid blowby, or structural issues are selected for engine harvesting.

• ASE Certified Testing: Every engine undergoes a rigorous, multi-point validation testing matrix supervised by an ASE Certified Diesel Master Technician. We maintain complete transparency—when you contact us, we will gladly walk you through the exact test results of your specific engine.

• Specialized Diesel Expertise: As premium powertrain professionals, our main focus centers on high-tier Diesel Powerstroke and Duramax platforms, ensuring unmatched product expertise.

Technical Specifications & Platform Features

• Engine Codes: 6.6L Duramax LML / LGH Turbo Diesel V8

• Production Years: 2011–2017

• Block Material: Heavy-duty cast iron block with high-strength aluminum cylinder heads

• LML Performance Ratings: Factory rated at a massive 397 Horsepower and 765 lb-ft of Torque (standard configuration)

• LGH Performance Ratings: Performance optimized at 335 Horsepower and 685 lb-ft of Torque (typically found in express chassis configurations)

• Fuel Infrastructure: Advanced common-rail injection system utilizing ultra-precise piezo injectors for crisp throttle response and clean combustion.

Application & Interchange Guide

These robust 6.6L platforms serve as versatile powerhouses that will adapt to a wide variety of heavy-duty applications. Depending on your exact project vehicle, swapping minor external accessories or brackets may be required to match your original chassis setup.

Important Package Details: Our Duramax engines arrive highly complete, including the full set of fuel injectors, high-output turbocharger assembly, and all major core components pictured in our inventory listings. Please note that external EGR (Exhaust Gas Recirculation) and certain air intake components are frequently removed and may be missing from the package.

Pricing, Logistics, & Core Inquiries

Note: The images displayed in this listing represent a previously sold engine and serve as an exact benchmark for the visual and mechanical quality of the inventory we have available at any given time.

Because our inventory moves quickly, individual pricing, exact mileages, and specific donor vehicle histories will vary. Core fees may also apply depending on your purchase configuration.

We provide secure, heavy-duty palletization with fully insured domestic freight across the United States, as well as direct containerized ocean freight to major international ports throughout Australia. Contact Swap Engine Vault today so we can pair you with the perfect, master-tested Duramax engine to fit your performance needs and budget!