OTTO Excavator Parts Npr 4Bd1 Valve Spring Small 8941255116 894125-5116 8-94125511-6 For Isuzu OTTO Isuzu NPR 4BD1 Valve Spring Small 8941255116 – 100% genuine OEM-grade excavator valve spring, precision-fit for Isuzu 4BD1 engines. Bulk in-stock with fast global shipping, perfect for wholesale & agency partners. Superior elasticity & fatigue resistance vs. generic aftermarket small springs, cuts rework/returns, boosts resale profit margins. Reliable cross-border supply for long-term cooperation.