The Honda 31110-ZL8-004 Flywheel Complete (TEC) is a genuine OEM component designed for a wide range of Honda engines and power equipment, including GC135 and GC160 horizontal shaft engines, GCV160 vertical shaft engines, EN2000 and EN2500 generators, HS520 and HS720 single-stage snow blowers, WN20 and WN30 water pumps, and FG400 and FG500 tillers. As a direct Honda OEM part, this flywheel is manufactured to the same specification as the original, ensuring correct magnet positioning, timing accuracy, and dimensional fit for the applications it covers. Because Honda supersedes flywheel part numbers at serial-number breaks, confirm your machine's serial number against the fitment table before ordering to be sure part number 31110-ZL8-004 is the right match for your unit.
Key Features
- Genuine OEM Ignition Timing Integrity — sourced directly from Honda, this flywheel carries the correct magnet spacing and pole geometry to maintain the ignition timing your engine's CDI or coil system depends on
- Direct OEM Replacement — engineered to swap in without modification, matching the original mounting, taper, and keyway of the engines and equipment it covers
- Broad Equipment Coverage — fits GC135 and GC160 horizontal shaft engines, GCV160 vertical shaft engines, EN2000 and EN2500 generators, HS520 and HS720 single-stage snow blowers, WN20 and WN30 water pumps, and FG400 and FG500 tillers
- Serial Number Verification Recommended — Honda updates flywheel specifications at production breaks; always match your machine's serial number to the fitment table to confirm this is the correct part for your serial range
- Charging System Performance — the flywheel's magnets drive the charging coil that keeps the battery topped up and powers the ignition; a cracked, demagnetised, or incorrectly matched flywheel leads to charging faults, misfires, or a no-start condition
The flywheel is a heavy rotating disc keyed to the crankshaft that serves two critical roles in a small engine. Its mass smooths out the power pulses from each combustion stroke, keeping the crankshaft spinning evenly between firing events. Equally important, permanent magnets embedded in the flywheel sweep past a stationary coil on each revolution, generating the electrical pulse that fires the ignition system and, on equipped models, charges the battery. When a flywheel cracks, loses a key, or has degraded magnets, the engine will misfire, run roughly, fail to charge, or refuse to start entirely — making a correct, OEM-matched replacement essential to restoring full operation.
Part Details
| Part Number | 31110-ZL8-004 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flywheel Complete (TEC) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EN2000, EN2500 | 3747198-9999999 |
| Horizontal Shaft Engine | GC135, GC160 | All |
| Single-Stage Snow Blower | HS520, HS720 | All |
| Tiller | FG400, FG500 | All |
| Vertical Shaft Engine | GCV160 | All |
| Water Pump | WN20, WN30 | 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.
