OTTO Excavator Spare Parts Ex356 6Hk1 Oil Overflow Valve 1131600350 113160-0350 1-13160035-0 For Isuzu This product is an oil overflow valve designed for the Isuzu engine model 6HK1 in the EX356 excavator. The part numbers associated with it are 1131600350, 113160-0350, and 1-13160035-0. The valve is essential for regulating oil flow and ensuring optimal performance of the specified.