2006-2007 6.6L GM Duramax LLY / LBZ
Diesel Performance Products and Accessories

For 2006, GM upgraded the trucks computer system which made it possible to have more injections of fuel each combustion cycle, and  this is what distinguishes the 2006 LLY from its predecessor, the 2004.5-05 LLY.  This software upgrade was necessary in order to meet the emission standards for 2007.  With a class leading 360 horsepower and 650 foot pounds of torque these trucks are quite impressive! The LBZ engines have many internal upgrades, such as a lower compression and a taller deck height, in order to handle increased boost levels, thus additional power, which is why  it is a great platform for building a performance monster!   We have numerous proven power combinations depending on exactly what you're looking to get out of your truck. If you are unsure of what parts are right for you, don't hesitate to give us a call or shoot an e-mail to [email protected] and we would be happy to assist.

Products in this section are designed to work on 2006 and 2007 (classic body style) 6.6L GM Duramax equipped trucks unless otherwise noted.

Use your VIN to verify if your engine is an LLY or LBZ

To verify, check the 8th digit in the VIN number:

  • If it's a D you have the LBZ engine

  • If it's a 2 you have the LLY engine

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