Based on the block used with 2010-2017 LML- and LGH code production engines, the new block P/N 12651877 is compatible with all first-generation Duramax 6.6L engines, including engine codes LB7, LLY, LBZ and LMM.
The Duramax block features a strong cast iron foundation known for its durability, with induction hardened cylinder walls and five nodular iron main bearings. A deep-skirt design and four bolts per main help ensure the block’s strength, and enable more accurate location of the rotating assembly. A die-cast aluminum lower crankcase also strengthens the engine block and serves as the lower engine cover, while reducing its overall weight.
Chevrolet Performance’s new Duramax block is the perfect starting point for building new life into a well used truck. Chevrolet Performance also offers just about every additional production part to support building the engine, from the rotating assembly, camshaft and cylinder heads, to the injectors, oil pump, rocker covers and more. See the accompanying chart for a more complete list and part numbers.
Partial and complete Duramax crate engines are also available through Chevrolet dealers and other Chevrolet parts retailers.
Chevrolet Performance, however, is the only outlet for a brand-new Duramax engine block. Get yours today and build new life into your trusted truck!