OTTO Excavator Spare Parts Sh4503B 6Uz1 Oil Overflow Valve 1131600340 113160-0340 1-13160034-0 For Isuzu This oil overflow valve, with part numbers 1131600340, 113160-0340, and 1-13160034-0, is specifically crafted for the Isuzu engine model 6UZ1 in the SH4503B excavator by OTTO. It serves a crucial function in regulating oil flow within the machinery, ensuring optimal performance and efficiency.