A flywheel is basically a heavy disc that connects to the engine’s crankshaft. Its main jobs are to store rotational energy, smooth out the engine’s power delivery, and provide a surface for the clutch to engage. Think of it like a little energy reservoir. The engine fires in pulses, but the flywheel keeps things spinning smoothly between those pulses. It also has teeth around the edge that the starter motor grabs onto to actually start the engine. It’s a core part of the engine, right down in the crankcase. When the engine is running, the flywheel is spinning at the same speed as the crankshaft. It works with the clutch and transmission to get power to the wheels. Without it, your engine wouldn’t run consistently, and you wouldn't be able to start it reliably. It’s a pretty fundamental piece. It’s important because it prevents the engine from stalling, especially at lower speeds. It acts like a shield against those jerky motions you’d feel otherwise. You’ll notice if a flywheel goes bad – the engine will run rough, maybe not start at all, and you’ll feel a lot of vibration. A damaged flywheel can also cause issues with your clutch and transmission, so it's best to address it sooner rather than later. You can find a good replacement for a pretty reasonable price these days, sites like Fixparts Online usually have a good selection. It’s one of those parts that’s not glamorous, but absolutely critical for keeping you on the road. Your satisfaction is our priority: Flywheel (MPN YM129150-77230) includes a 12-month warranty!

About Komatsu

Komatsu is a global leader in construction and mining equipment, renowned for its durable, high-performance machinery. Originating from Japan, Komatsu continues to provide innovative solutions for the toughest industrial applications.

Why Choose Komatsu?

• Komatsu parts are built to last, even in the toughest conditions, so you get more work done with fewer repairs. • We make parts specifically for Komatsu equipment, guaranteeing a perfect fit and optimal performance. • Using genuine Komatsu parts helps maintain your machine’s value and protects your investment. • You can rely on our wide network of dealers for fast, convenient access to the parts you need, when you need them. Performance you can rely on – Komatsu parts from FixParts Online.