Yanmar 3TNV84 3TNV88 Crankshaft 129004-21002 YM129004-21002 for Diesel Engine

Product Details

Product Overview

This high-precision Yanmar Crankshaft (Part No. 129004-21002 / YM129004-21002) is a critical engine component specifically designed for the Yanmar 3TNV84 and 3TNV88 diesel engine series. Manufactured to meet or exceed original OEM specifications, this crankshaft ensures reliable rotational force conversion and long-term durability. We supply this component globally, serving major markets including North America, Europe, Southeast Asia, the Middle East, and Oceania, with fast and secure shipping to industrial hubs and ports worldwide.

Key Features & Benefits

• OEM-Grade Quality: Precision-engineered to match the exact specifications of the original Yanmar 129004-21002.
• Superior Durability: Constructed from high-strength forged steel, providing excellent resistance to torsional stress and wear.
• Enhanced Performance: Precision-ground journals ensure optimal oil film retention, reducing friction and extending engine life.
• Rigorous Testing: Each unit undergoes strict dimensional and hardness checks to guarantee perfect fitment and balance.
• Direct Replacement: A seamless drop-in replacement for the original part, minimizing downtime during engine overhaul.

Technical Specifications

OEM Cross-Reference

This crankshaft is a direct replacement for the following original equipment manufacturer (OEM) numbers:

• Yanmar: 129004-21002
• Alternative Number: YM129004-21002

Compatibility

This crankshaft is specifically designed for the following engine platforms:

• Yanmar 3TNV84 Series: Used in various compact excavators, generators, and industrial pumps.
• Yanmar 3TNV88 Series: Commonly found in agricultural tractors, light construction equipment (e.g., mini excavators, skid steer loaders), and marine auxiliary engines.

Note: Always verify your engine’s model number and serial plate to ensure correct fitment.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping via air freight (DHL, FedEx, UPS) and sea freight (FCL/LCL) to all major destinations.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Japan, Korea, Australia, Singapore), Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile).
• Fast Delivery: Stock items are dispatched within 24 hours to major ports like Shanghai, Rotterdam, Los Angeles, and Dubai.
• Export Compliance: We have extensive experience in international trade, ensuring all documentation (Bill of Lading, Commercial Invoice, Packing List) is properly handled for smooth customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities, adhering to strict quality control processes.
• Testing: Each crankshaft is tested for dimensional accuracy (journal diameter, pin alignment), surface hardness (Rockwell testing), and dynamic balance.
• Warranty: We offer a standard 12-month warranty against manufacturing defects, providing peace of mind for your investment.

FAQ

Q1: Is this crankshaft a direct replacement for the original Yanmar part 129004-21002?
Yes, this crankshaft is manufactured to the exact OEM specifications of the Yanmar 129004-21002. It is a direct drop-in replacement and requires no modifications to the engine block or bearing caps.

Q2: What are the critical installation steps for this crankshaft?
During installation, ensure the crankshaft journals are thoroughly cleaned and lubricated with clean engine oil. Use a calibrated torque wrench to tighten the main bearing cap bolts to the manufacturer’s specified torque (typically found in the Yanmar service manual for the 3TNV84/88 engine). Always replace the main bearings and thrust washers with new ones for optimal performance.

Q3: How can I verify the correct fitment for my engine?
Check your engine’s model number (e.g., 3TNV84-T or 3TNV88-T) and the serial number plate. The part number 129004-21002 is specific to the 3TNV84 and 3TNV88 series. If you have a different engine model, please contact our sales team with your engine’s details for cross-referencing.