LB7 Must-Do Upgrades for Longevity

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2026-05-26 14:12:40 -

The 2001–2004 6.6L Duramax LB7 is one of the most legendary diesel engines ever built. Known for strong torque, simple emissions design, and long-term durability potential, it remains a favorite among truck owners even today. However, the LB7 also has a few known weak points—especially in the fuel system—so choosing the right upgrades is essential if your goal is long engine...

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