The Honda 31213-ZE1-781 Reduction Gear is a genuine OEM component designed for Honda HS521 and HS621 single-stage snow blowers and HS55 and HS80 two-stage snow blowers. As a direct Honda OEM part, it is manufactured to the same specifications as the original, ensuring a proper fit without modification. Honda supersedes parts at serial number breaks, so confirm your machine's serial number against the fitment table before ordering to make sure part number 31213-ZE1-781 is the correct reduction gear for your unit.
Key Features
- Genuine OEM Gear Integrity — manufactured by Honda to deliver the same tooth geometry and load-bearing performance as the original, keeping the drivetrain operating as designed
- Broad Snow Blower Compatibility — fits HS521 and HS621 single-stage units as well as HS55 and HS80 two-stage snow blowers, covering a wide range of Honda residential and commercial snow-clearing equipment
- Direct OEM Replacement — engineered to swap in place of the worn or damaged original with no adaption needed, restoring correct gear reduction ratios throughout the drivetrain
- Check Serial Number Before Ordering — Honda updates part supersessions at specific serial breaks; always match your unit's serial number to the fitment table to confirm this is the right reduction gear for your snow blower
The reduction gear is a core drivetrain component inside the snow blower's gear case. It steps down the engine's high-speed output to the slower, higher-torque rotation needed to drive the auger or paddle assembly through heavy, packed snow. When this gear wears or chips, the blower loses the mechanical advantage it needs — the auger may turn slowly, inconsistently, or not at all, leaving the machine unable to move snow effectively. Replacing a worn reduction gear restores full power transfer and keeps the snow blower performing the way it was built to.
Part Details
| Part Number | 31213-ZE1-781 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Reduction Gear |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Single-Stage Snow Blower | HS521, HS621 | All |
| Two-Stage Snow Blower | HS55, HS80 | 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.
