This item was previously listed. I opened the box and confirmed that is an 8.3L QSC enginePart Number on engine block: 3971383Part number on the box: 4089078This is a high-performance Cummins diesel engine block with 6 cylinders. It is compatible with Cummins machinery and has been designed to meet the highest standards of reliability and longevity. The engine block is brand new and made with top-quality materials, ensuring optimal performance and durability for years to come. This is a great investment for anyone looking to build a reliable and powerful engine. This is Genuine Cummins brand engine block. Condition is brand new in box. Cardboard box was slightly damaged by chain from engine hoist. Engine block is unscathed. I have opened the box to verify contents. There is oil on the engine to prevent rust you can see it on the top of the block.