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Fitment checkOEM number, engine model, and machine model confirmation.
Manual quotePrice, MOQ, stock, lead time, and replacement options.
Export supportPacking notes, mixed order support, and shipping details.
Product Details
Product Overview
This premium quality replacement crankshaft is specifically engineered for Yanmar 4TNE84 and 4TNE88 diesel engines. As a critical engine component, it ensures precise rotational motion transfer from pistons to the flywheel. This part is manufactured to meet or exceed OEM specifications, offering reliable performance for industrial, agricultural, and construction machinery applications. We provide global shipping to major markets including North America, Europe, Southeast Asia, and the Middle East.
Key Features & Benefits
Precision Engineering: Manufactured to exact OEM tolerances for perfect fitment and optimal engine balance.
Superior Durability: Constructed from high-strength forged steel with induction-hardened bearing surfaces for extended service life.
Note: Always verify your engine model and existing part number before ordering. This crankshaft is a direct replacement for the listed OEM numbers.
Compatibility
Engine Models: Yanmar 4TNE84, Yanmar 4TNE88
Typical Applications: Excavators, tractors, generators, forklifts, marine engines, and industrial equipment powered by these Yanmar diesel engines.
Year Range: Compatible with most production years of the 4TNE84 and 4TNE88 engines. Check your engine serial number for exact fitment.
Global Supply & Distribution
Worldwide Shipping: We ship to all continents including North America, Europe, Asia-Pacific, Middle East, Africa, and South America.
Major Ports: Fast delivery to major industrial hubs and ports such as Rotterdam, Singapore, Dubai, Los Angeles, Shanghai, and Hamburg.
Export Expertise: Experienced in international trade documentation, customs clearance, and logistics coordination.
Reliable Logistics: Multiple shipping options available (Express, Air Freight, Sea Freight) based on your urgency and budget.
Quality Assurance
Manufacturing Standards: Produced in ISO 9001 certified facilities under strict quality control procedures.
Testing: Each crankshaft undergoes dimensional inspection, hardness testing, and dynamic balancing before shipment.
Warranty: We offer a standard 12-month warranty against manufacturing defects. Extended warranty options available upon request.
Certification: Material test certificates and inspection reports available upon request for quality verification.
FAQ
Q1: How do I confirm this crankshaft fits my specific Yanmar engine?
Please verify your engine model (4TNE84 or 4TNE88) and check the existing part number on your current crankshaft. The primary OEM numbers are 129001-21100 and 129407-21000. If your part number matches or is within the cross-reference list, this crankshaft will fit. For additional verification, measure the main journal and crankpin diameters against your engine specifications.
Q2: What maintenance is recommended when installing a new crankshaft?
Always replace main bearings, connecting rod bearings, and thrust washers when installing a new crankshaft. Ensure the engine block is clean and oil passages are free of debris. Torque all bearing caps to factory specifications using a calibrated torque wrench. After installation, prime the oil system and perform a slow rotation check to ensure no binding occurs.
Q3: Can this crankshaft be used with upgraded pistons or performance modifications?
This crankshaft is designed for standard OEM specifications. It can be used with aftermarket pistons as long as they maintain the original stroke length and compression height. For any performance modifications, we recommend consulting with a qualified engine builder to verify compatibility and ensure proper balancing of the rotating assembly.
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