Cylinder liners used in diesel engines of combat equipment are prone to cavitation due to wet cooling. The damage caused by erosion and corrosion due to cavitation has a fatal effect on the performance andlifespan of a diesel engine. Therefore, a study was conducted to improve the durability of cylinder liners. Two surface treatment techniques were proposed: nitriding and chrome plating. It was observed that theamount of erosion on the surface of nitride-treated cylinder liners was high because the surface-treated parteroded due to its weak impact resistance against the bubble explosion generated by cavitation. In contrast, thechrome-plated cylinder liner had a lower amount of erosion among the specimens subjected to the acceleratedtest. These results verified that the resistance of chrome-plated liners against cavitation is high. Therefore, itcan withstand the impact of bubble explosion. If the chrome plating thickness is set with reference to the KSstandard, an exceptional durability of abrasion, wear resistance, and corrosion resistance can be obtained. Ifthe thickness is set between 120~250㎛, it is expected that the durability of the cylinder liner can beimproved. Although a recovery method for corroded cylinder liners is suggested, the proposed method has aninherent risk of crack generation. Therefore, further research is required to solve this problem.