OTTO Excavator Parts Zx330-3 6Hk1 Cylinder Head Cover Pad Nut 8976018496 897601-8496 8-97601849-6 For Isuzu OTTO Isuzu ZX330-3 6HK1 Cylinder Head Cover Pad Nut 8976018496 – Premium OEM replacement for Isuzu ZX330-3 6HK1 mining excavators. Engineered for extreme mining vibration, heavy loads & high temps, outlasting cheap aftermarket nuts. Secure pad fastening, prevents loosening/oil leakage, slashes downtime for nonstop heavy-duty mining operation.