If you are managing an engine overhaul for a Yanmar 3TNV80, selecting a high-precision crankshaft is critical for long-term performance. Our 129004-21000 (also referenced as 12900421000) replacement crankshaft is engineered to meet or exceed OEM standards, ensuring optimal engine balance and power delivery.
| Category | Details |
|---|---|
| Model NO. | 3TNV80 |
| Part Number | 129004-21000 (12900421000) |
| Product Name | Crankshaft |
| Condition | Brand New, OEM Standard Replacement |
| Application | Engine rebuild, overhaul, maintenance |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch |
| Packaging | Industrial Export Packing |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL Fedex EMS UPS or by Air/Sea |
| Feature | Our Replacement Crankshaft | Generic Market Parts |
|---|---|---|
| Material Quality | High-Grade Steel Alloy | Standard Cast Iron |
| Balancing | Precision Balanced (OEM Spec) | Often Unbalanced |
| Surface Treatment | Hardened Journal Surfaces | Standard Finish |
| Longevity | Designed for Heavy Duty Cycles | Short Service Life |
| Dimensional Tolerance | Strict Engineering Standards | Inconsistent Fit |
| Support | Full Technical Maintenance Advice | No Technical Support |
Not sure how this issue affects your equipment? Our team helps operators:
Identify potential risks during maintenance.
Recommend suitable replacement parts if needed.
Support both inspection advice and parts supply.
Crankshaft failure is often caused by oil contamination, improper bearing clearance, or overheating. Regular maintenance and using high-quality components are essential to prevent vibration and catastrophic engine failure.
Our crankshaft features an OEM-standard tri-metal structure, ensuring durability under high loads. It is trusted by repair shops and equipment fleets globally for its reliability in demanding working conditions.
We specialize in comprehensive engine solutions for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai engines. Our extensive inventory includes cylinder liners, pistons, piston rings, crankshaft bearings, connecting rod bearings, thrust washers, overhaul gasket kits, diesel fuel pumps, fuel injectors, crankshafts, turbochargers, water pumps, oil pumps, cylinder blocks, cylinder heads, and connecting rods.
Whether you need diesel engine component supply, heavy duty engine repair kits, or reliable excavator engine parts, we provide professional support for equipment maintenance and fleet management worldwide.
Click the button below to visit our Facebook profile and stay updated with the latest news and updates!
Visit Facebook Profile
English
English