Yanmar crankshaft 129900-21000 YM129900-21000 4TNE94 crankshaft Yanmar 4TNE94 engine parts Yanmar diesel engine crankshaft

◆ Product Overview
A precision-manufactured OEM replacement crankshaft designed for Yanmar 4TNE94 series diesel engines. Engineered to exact factory specifications for part numbers 129900-21000 and YM129900-21000, this component ensures reliable performance, durability, and compatibility in industrial and generator applications.

◆ OEM Part Numbers
✓ 129900-21000
✓ YM129900-21000

◆ Compatible Engine Series
✓ Yanmar 4TNE94 Engine Series

◆ Product Specifications
✓ Condition: 100% Brand New
✓ Material: High-Grade Forged Alloy Steel
✓ Engine Model: Yanmar 4TNE94
✓ Finish: Precision Ground, Hardened & Micro-Polished

◆ Key Features
✓ Direct OEM Fit – Interchanges with Yanmar 129900-21000
✓ Forged Steel Construction for Enhanced Strength & Fatigue Life
✓ Optimized for Smooth Operation in Industrial & Generator Sets
✓ Restores Original Engine Performance, Torque & Reliability

◆ Quality Assurance
✓ 100% New Production – Not Remanufactured
✓ Full Dimensional & Metallurgical Compliance Certified
✓ Non-Destructive Testing (NDT) & Hardness Testing Passed
✓ Dynamically Balanced to Yanmar Factory Standards

◆ Installation Applications
✓ Complete 4TNE94 Engine Overhaul & Rebuild
✓ Crankshaft Replacement in Generator, Pump & Industrial Power Units
✓ Marine Auxiliary Engine Repairs
✓ Fleet Maintenance for Yanmar-Powered Equipment

◆ Service Advantages
✓ Ensures Long-Term Reliability in Continuous-Duty Applications
✓ Simplified Sourcing with Exact OEM Part Number Match
✓ Reduces Downtime for Critical Power & Industrial Systems
✓ Global Supply Chain Support Available