The Honda 31105-Z0Y-800 Flywheel Assembly (TEC) is a genuine OEM component designed for GCV190 and GSV190 vertical shaft engines, the HRC216 lawn mower, and the HRX217 lawn mower. As a direct Honda OEM part, it is manufactured to the same specifications as the original and installs without modification. This flywheel assembly is built to restore proper ignition timing and engine smoothing on the machines it serves — confirm your model and serial number against the fitment table before ordering, as Honda supersedes flywheel assemblies at serial breaks.
Key Features
- Genuine OEM Ignition Integrity — Honda-sourced flywheel with correctly positioned trigger magnets, ensuring the ignition system fires at the right crank angle for clean starting and smooth power delivery.
- Direct OEM Replacement — engineered to the original Honda specification, this assembly drops into place on GCV190 and GSV190 vertical shaft engines, the HRC216, and the HRX217 without alteration.
- Wide Fitment Across Honda's Residential and Commercial Line — covers GCV190 and GSV190 vertical shaft engines as well as the HRC216 and HRX217 lawn mowers; verify your serial number against the fitment table to confirm the correct variant for your unit.
- Restores Engine Balance and Spark Timing — a worn or cracked flywheel disrupts both rotational balance and ignition timing, causing hard starts, rough running, and misfires; replacing it with part number 31105-Z0Y-800 returns the engine to correct operation.
The flywheel is a heavy rotating disc mounted directly on the crankshaft. It serves two critical roles: its mass smooths out the power pulses of a single-cylinder engine, and the magnets cast into its rim trigger the ignition coil as they pass, generating the spark that fires the combustion cycle. When a flywheel cracks, loses a magnet, or becomes damaged at the keyway, the engine will either misfire, run roughly, or refuse to start altogether. Fitting a correct replacement restores both the rotational balance that keeps the engine running smoothly and the precise magnetic trigger that the ignition system depends on.
Part Details
| Part Number | 31105-Z0Y-800 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flywheel Assembly (TEC) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Mower | HRC216 | 1000001-1013146 |
| Lawn Mower | HRX217 | 1779717-9999999 |
| Vertical Shaft Engine | GSV190 | 1045910-9999999 |
| Vertical Shaft Engine | GCV190 | 1761697-9999999 |
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.
