Cylinder block for Cummins 4BT3.9 OEM No.: 3903920 G.W.: 105kgs Packing size: 650* 435* 520mm -- Our factory is specialized in manufacturing cylinder block, already have more than 20 years experience in China, the material selects the Chinese best raw material. -- We have the ability to make the products according to customers samples and drawings and hope to cooperate with the new customer. -- For more models& details, please kindly browse Shanghai Niuzhang' s website and feel free to contact us!