OTTO Excavator Parts Cx130B 4Jj1 Cylinder Head Cover Pad Nut 8973815246 897381-5246 8-97381524-6 For Isuzu OTTO Isuzu CX130B 4JJ1 Cylinder Head Cover Pad Nut 8973815246 – Premium OEM replacement for Isuzu CX130B 4JJ1 mining excavators. Engineered for mining site vibration, medium-heavy loads & high temps, outlasting cheap aftermarket nuts. Secure pad fastening, prevents loosening/oil leakage, slashes downtime for nonstop on-site mining operation.