Yamaha 7YT-11400-00-00 – Crank Assy

Yamaha 7YT-11400-00-00 – Crank Assy

Restore your engine’s power and precision with the Yamaha 7YT-11400-00-00 – Crank assy. This genuine Yamaha OEM crankshaft assembly is engineered to exact factory standards, providing the backbone of your engine’s bottom end. It converts linear piston motion into the rotational force that drives your outboard or powersport machine with strength and reliability. Ideal for rebuilds or major repairs, this part ensures smooth, balanced engine performance.

Key Features

Genuine Yamaha OEM Component – Manufactured for factory-fit and long-term performance

Pre-Assembled Crankshaft Assembly – Ready for direct installation into compatible Yamaha engines

Precision-Balanced for Smooth Operation – Minimizes vibration and promotes consistent power delivery

Heat-Treated for Strength – Designed to endure high loads, RPMs, and thermal cycling

Ideal Use Cases

This crank assembly is essential when performing a full engine rebuild, addressing bottom-end failure, or correcting damage from oil starvation, excessive wear, or bearing failure. It provides the foundation for proper timing, piston movement, and reliable internal rotation.

Why Crankshaft Integrity Matters

The crankshaft is one of the most critical parts of any engine. If it’s worn, bent, or damaged, performance will drop—and more serious internal damage can follow. The Yamaha 7YT-11400-00-00 – Crank assy delivers factory-level reliability and durability, helping you rebuild with confidence and protect your investment long-term.

Frequently Asked Questions

What does the Yamaha 7YT-11400-00-00 – Crank assy do?

It transforms the up-and-down motion of the pistons into rotational force that powers the engine, forming the core of your engine’s bottom-end assembly.

When should I replace the crankshaft assembly?

Replace it if you see signs of scoring, excessive play, bearing failure, imbalance, or after a catastrophic engine failure. It’s often replaced during full rebuilds.

Is this crankshaft pre-assembled?

Yes. This OEM crank assembly comes pre-assembled and balanced for faster installation and greater precision during rebuilds.