The Honda 91351-743-000 O-Ring (144.4X3.1) is a genuine OEM replacement designed for HS522 and HS622 two-stage snow blowers. As a direct Honda OEM component, this O-ring is manufactured to the exact dimensions specified for these machines, ensuring a proper seal where it counts. Confirm fitment by checking your snow blower's serial number against the compatibility table before ordering.
Key Features
- OEM Sealing Integrity — manufactured to Honda's exact 144.4 x 3.1 mm specification, so the sealing cross-section and inner diameter match the original groove geometry precisely.
- Direct OEM Replacement — sourced directly from Honda, this O-ring seats and seals exactly as the original, with no trimming or modification needed.
- HS522 and HS622 Fitment — listed for Honda HS522 and HS622 two-stage snow blowers; verify your unit's serial number against the fitment table to confirm the correct variant for your machine.
- Leak Prevention — a correctly seated O-ring maintains fluid or air containment within the assembly; a cracked, flattened, or deformed O-ring allows leaks that can lead to fluid loss or reduced system performance.
An O-ring is a loop-shaped elastomeric seal that sits in a machined groove and is compressed between two mating surfaces to prevent fluid or air from passing through the joint. In a two-stage snow blower like the HS522 and HS622, O-rings are used throughout the machine wherever fluid passages, housings, or covers must be sealed against leakage. Over time, heat cycling, compression set, and exposure to fluids cause an O-ring to harden, flatten, or crack, at which point it can no longer maintain an effective seal. Replacing a worn O-ring with the correct OEM part, matched to the exact diameter and cross-section, restores the seal and prevents fluid loss or contamination.
Part Details
| Part Number | 91351-743-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (144.4X3.1) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Two-Stage Snow Blower | HS522, HS622 | 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.
