OTTO Excavator Spare Parts Zx70 4Jg1 Generator Adjusting Arm 8941494190 894149-4190 8-94149419-0 For Isuzu A precision-engineered, heavy-duty replacement component tailored for mid-size construction machinery, this OTTO Generator Adjusting Arm is exclusively designed to fit Isuzu 4JG1 engines and seamlessly integrate with Hitachi ZX70 excavators. Featuring three interchangeable part numbers—8941494190, 894149-4190, and 8-94149419-0—it adheres to strict OEM specifications and industrial quality standards, ensuring reliable performance and structural durability in the most demanding construction, mining, and agricultural environments.