General Motors' LBZ Duramax Engine is one of the most reliable engines ever built. Over the years, the LBZ and other Duramax engines have carved out a reputation for durability, reliability, and ...

If your truck is powered by an LML Duramax or 6.7L Cummins ... Instead, it has parts to reroute the fuel return lines through an additional filter, preventing any metal shavings produced by ...