OTTO Excavator Parts Ex300 6Sd1 Cylinder Head Cover Pad Nut 9111791056 911179-1056 9-11179105-6 For Isuzu OTTO Isuzu EX300 6SD1 Cylinder Head Cover Pad Nut 9111791056 – 100% genuine OEM-grade fastener for Isuzu 6SD1 engines. Bulk in-stock with fast global shipping, ideal for wholesale & agency partners. Superior high strength, anti-loosening & precise fit, cuts rework/returns, boosts resale margins. Stable cross-border B2B supply.