The Honda 31110-Z5K-W00 Flywheel is a genuine OEM component designed for EM3800, EM4000, EM5000, and EM6500 generators and GX240 and GX270 horizontal shaft engines. As a direct Honda OEM part, it is manufactured to the exact specifications of the original, ensuring proper fit and function across every compatible unit. Confirm your model and serial number against the fitment table before ordering, as Honda supersedes components at production breaks and the correct flywheel varies by serial range.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this flywheel matches the original in geometry, balance, and magnetic pole configuration, ensuring ignition timing and charging output are not compromised by an imprecise substitute.
- Broad Compatibility — fits EM3800, EM4000, EM5000, and EM6500 generators as well as GX240 and GX270 horizontal shaft engines, making it a single-source solution across multiple Honda platforms.
- Serial Number Verification Recommended — Honda introduces running production changes at specific serial breaks; always cross-reference your unit's serial number with the fitment table to confirm this is the correct flywheel for your machine.
- Restores Proper Engine Operation — a worn, cracked, or damaged flywheel disrupts ignition timing, causes hard starting, rough running, and, on generators, unstable voltage output; replacing it with this OEM part brings the engine back to correct operating condition.
The flywheel is a heavy rotating disc mounted directly to the crankshaft. On Honda engines and generators, it serves two critical functions: its mass smooths out the power pulses of each combustion cycle, keeping the crankshaft turning evenly between strokes, and its embedded magnets sweep past the ignition coil to generate the high-voltage spark signal that fires the cylinder. On generator-equipped units, the flywheel's rotation also drives the alternator, contributing directly to stable electrical output. When a flywheel cracks, loses a magnet, or becomes unbalanced, the engine typically exhibits hard starting, misfiring, or a pronounced vibration, and generator output can become erratic or drop out entirely.
Part Details
| Part Number | 31110-Z5K-W00 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flywheel |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EM3800, EM4000, EM5000, EM6500 | All |
| Horizontal Shaft Engine | GX240 | 1002268-9999999 |
| Horizontal Shaft Engine | GX270 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
