Description: short block assembly with: Cylinder block: cast iron Cranksahft: forged steel Camshaft: forged steel Pistons: oem Cylinder liners: oem Conrods: oem Bearings: oem Nozziles: oem Suitable: mercedes benz truck actros, axor, atego Engine model: om501la, om457la, om906la, om904la, om460la, etc. Our short block can offer a quick and cost saving for replacement in aftermarket. We have rich experienced technicians, rigid quality control and inspection to guarantee quality and save your worries. For more details, don't hesitate to contact us! Quick and professional service shall be from us!