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2006-2007 6.6 LBZ Duramax Stock Long Block Fits: 2006-2007 6.6 LBZ Duramax Item Type: Long Block Crate Engine Brand: Industrial Injection Part Number: PDM-LBZSTKLB-E The Industrial Injection built 6.6L LBZ Duramax Stock Long Block is the perfect choice for those seeking an affordable and reliable replacement engine. We are committed to using only the highest quality parts and precision machining processes in every engine build. This ensures both durability and reliability, resulting in an engine that will provide you with the longest running experience on the road.