The Honda 31110-Z5T-820 Flywheel (SEL-LAMP) is a genuine OEM flywheel designed for GX340 and GX390 horizontal shaft engines, as well as HS928, HSS928, HS1332, and HSS1332 two-stage snow blowers. As a direct Honda OEM component, this flywheel is manufactured to the exact design intent of the original, ensuring a correct fit without guesswork. Confirm your machine's serial number against the fitment table before ordering, as Honda supersedes flywheel part numbers at serial breaks and the correct variant matters for proper charging and ignition system function.
Key Features
- Genuine OEM Charging and Ignition Integration — this flywheel carries the SEL-LAMP designation, indicating it is spec'd with the magnet arrangement that supports Honda's lighting coil output alongside the ignition system, matching the original design exactly
- Direct OEM Replacement — sourced directly from Honda, this component is identical to the part that left the factory, so it installs without modification or adaptation to the engine's crankshaft taper
- Broad Fitment Across Engines and Snow Blowers — compatible with GX340 and GX390 horizontal shaft engines, and HS928, HSS928, HS1332, and HSS1332 two-stage snow blowers, including both standard and HSS series machines
- Serial Number Verification Recommended — Honda updates flywheel specifications at production serial breaks; always confirm your machine's serial number against the fitment table to ensure this is the correct variant for your unit
- Restored Ignition and Lighting Performance — a worn or damaged flywheel can cause weak spark, erratic ignition timing, or loss of lighting coil output; replacing it with part number 31110-Z5T-820 restores the engine's full electrical performance
The flywheel is a heavy rotating disc mounted directly on the crankshaft that serves two critical functions. First, its mass smooths out the power pulses of the combustion cycle, keeping the engine running evenly at all speeds. Second, the magnets embedded in its rim pass the ignition coil and lighting coil at every revolution, generating the electrical pulses that fire the spark plug and supply current to any lamp or charging circuit. A flywheel that is cracked, has damaged magnet poles, or is incorrectly matched to the ignition system will result in hard starting, a weak or absent spark, and lost lighting output — making an exact-specification replacement essential to restoring normal operation.
Part Details
| Part Number | 31110-Z5T-820 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flywheel (SEL-LAMP) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX340, GX390 | All |
| Two-Stage Snow Blower | HS928, HS1332, HSS928, HSS1332 | 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.
