2001-2004 6.6L GM Duramax LB7
Diesel Performance Parts and Accessories

In 2001 GM introduced the 6.6L LB7 Duramax to the diesel industry, sending a strong message to Ford and Dodge that they were now a contender in the light duty diesel truck market.  With an available Allison 5-speed automatic to back it up, the LB7 has proven not only to be reliable but also capable of tremendous horsepower and torque gains.  At Diesel Power Products we can help you achieve your goal for your truck no matter what that might be.  Search the categories below for all of your LB7 Duramax Diesel Performance needs.  If you need help deciding which parts are right for you either call or send an email to [email protected]

Attention: If you have a GM Duramax  please verify your engine type before ordering any product. You will either have an LMM, LB7, LLY, or LBZ  motor, many of the products we offer are not interchangeable with all three engines.


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

  • If it's a 1 you have the LB7 motor and it is covered by the model years 01-04

  • If it's a 2 you have the LLY motor and it is covered by the model years 04.5-05



Products in this section are designed to work on 2001, 2002, 2003 and 2004 6.6L GM Duramax equipped trucks unless otherwise noted.