Description
Factory Supply Engine Crankshaft YM129902-21000 YM129902-21050 YM129900-21050 for YANMAR ISDE6.7 4TNV94 4TNE94/4D94 4TNV106 Crankshaft
This high-performance crankshaft is built to handle the toughest demands, whether in daily drivers, work trucks, or performance builds.
Using advanced manufacturing techniques and premium materials, we’ve created a component that delivers lasting reliability under constant stress.
The smooth rotation and balanced design help your engine run cleaner and more efficiently, while the reinforced construction stands up to years of heavy use without failure.
Built to Last
Crafted from premium-grade materials, this crankshaft is designed to handle years of hard use:
✔ Heavy-duty construction – Resists wear and fatigue even under constant stress
✔ Precision-balanced – Reduces vibration for smoother engine operation
✔ Reinforced journals – Extra durability where it matters most
✔ Advanced surface treatment – Minimizes friction for better efficiency
Perfect Fit, Every Time
✔ Matches original specifications exactly
✔ Direct replacement – no modifications required
✔ All critical dimensions verified for accuracy
✔ Saves time and hassle during engine rebuilds
Factory-Direct Quality
We manufacture these crankshafts to strict standards, offering:
✔ Ready to ship – No long wait times
✔ Hand-inspected – Each unit carefully checked before delivery
✔ Global availability – Fast shipping worldwide
✔ Competitive pricing – Premium quality without the premium cost
Precision Engineered for Reliability
Every crankshaft undergoes rigorous quality validation to ensure optimal performance:
Rigorous Quality Validation
✔ Dimensional Verification:Laser-scanned critical tolerances, Precise component mating, OEM-level fitment accuracy
✔ Material Integrity:Hardness tested for durability, Verified material consistency, Exceeds wear resistance standards
✔ Dynamic Balancing:High-speed vibration analysis, Precision weight adjustment, Factory-spec balance
✔ Durability Simulation:Accelerated lifecycle testing, Extreme thermal cycling
Long-term integrity validation
Our comprehensive testing protocol delivers:
✓ Flawless component compatibility
✓ Enhanced service life
✓ Vibration-free operation
✓ Proven reliability
Performance Benefits
✔ Smoother engine operation – Reduced vibrations mean less wear on other components
✔ Improved longevity – Outlasts cheaper alternatives
✔ Better fuel efficiency – Optimized design helps maintain proper engine balance
✔ Lower maintenance needs – Built to last with minimal servicing
Trusted by Professionals
Mechanics and engine builders choose this crankshaft because:
✔ It’s a proven solution for reliable repairs
✔ Works perfectly in both stock and high-performance builds
✔ Ideal for fleet maintenance or restoration projects
✔ Delivers the best balance of strength and smooth operation
Smart Design Features
✔ Forged construction – Stronger than standard cast crankshafts
✔ Precision-machined surfaces – Ensures proper bearing fit
✔ Optimized oil passages – Improves lubrication for longer life
✔ Factory-spec counterweights – Maintains perfect engine balance
Customer Support
✔ Expert advice available for installation questions
✔ Quick responses to technical inquiries
✔ Detailed guidance for professional or DIY builds
Warranty Protection
✔ Backed against manufacturing defects
✔ Hassle-free replacement for qualified claims
✔ Professional installation recommended
Why Choose This Crankshaft?
Whether you’re rebuilding a worn-out engine or assembling a high-performance setup, this crankshaft delivers the durability and precision you need. It’s engineered to meet Toyota’s original standards, tested to ensure reliability, and priced to provide real value.
For a crankshaft that keeps your engine running strong, this is the smart choice.
