LML DuraMax Crate Engine – Chevrolet Performance LML 6.6L DuraMax Truck Crate Engine


  • 397 hp @ 3,000 rpm / 765 lb.-ft torque @ 1,600 rpm
  • Fits 2011-2015 Chevrolet Silverado
  • Fuel mileage increase of 11% over previous generation engines
This product includes a $3,500 Core Charge. See Core Charge Tab below for more details.

Shipping is free, but there is a delivery fee for residential addresses.

SKU: 19302836 Categories: ,

LML 6.6L DuraMax Crate Engine

The Chevrolet Performance LML 6.6L DuraMax crate engine was released for 2011 model GM/GMC HD trucks. Not only is the LML the cleanest DuraMax in history, it is also the most powerful at 397 hp & 765 lb-ft of torque.

The Duramax LML introduced the “9th injector” system in order to supply fuel to the DPF during regeneration. The result eliminated cylinder washing concerns and permits the use of up to B20 biodiesel. New technologies allow for an advantageous engine calibration to be executed and provide significant improvements in fuel economy. Chevy Performance has engineered a fuel mileage increase of 11% over previous generation engines.

The LML crate motor components include an upgraded engine block casting, oil pump, high strength pistons and connecting rods, main bearing design, and re-routed oil passage circuit. Rated at 397 hp and 765 lb-ft of torque, the engine is significantly more powerful than any prior DuraMax.

Weight 757 lbs


Please share VIN and current mileage in order notes for warranty documentation (if applicable)

Manufacturer Part Number


This product contains a core charge.  If you return your core to us and it’s deemed reusable you will be refunded the core charge amount.  If you have any questions please give our team a call here at 855-806-1147 and we would be happy to help you out.

Chevrolet Performance Crate Engines carry a 24 Month or 50,000 mile warranty (whichever comes first) when installed by a qualified independent service center. Chevrolet Performance Crate Engines also come with a 30 day start up warranty (parts only).

There are some additional limitations on the warranty – please see the official GM warranty documentation for more information.


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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.