OTTO Excavator Spare Parts Cx130B 4Jj1 Generator Adjusting Arm 8980387850 898038-7850 8-98038785-0 For Isuzu A precision-engineered, heavy-duty replacement component tailored for industrial machinery reliability, this OTTO Generator Adjusting Arm is exclusively designed to fit Isuzu 4JJ1 engines and seamlessly integrate with Case CX130B excavators. Featuring three interchangeable part numbers—8980387850, 898038-7850, and 8-98038785-0—it adheres to strict OEM specifications and industrial quality standards, ensuring consistent performance and structural durability in the most demanding construction, mining, and infrastructure environments.