The Honda 91305-Z2E-000 O-Ring (31.8X2.4) is a genuine OEM sealing component designed for GX440 horizontal shaft engines. As a direct Honda OEM part, it is manufactured to the exact dimensions specified for this application, ensuring a proper seal where it is fitted. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and this listing covers specific production ranges of the GX440.
Key Features
- OEM Sealing Precision — a genuine Honda O-ring manufactured to the exact 31.8 x 2.4 mm profile specified for its sealing application, meaning the correct cross-section and diameter to hold fluid or air pressure without weeping
- Direct OEM Replacement — this part installs in place of the original with no modification, restoring the sealing interface to its as-built condition
- GX440 Fitment — listed for GX440 horizontal shaft engines; verify your serial number against the compatibility table to confirm this is the correct part for your production range
An O-ring is a loop of elastomeric material seated in a groove to create a fluid-tight or air-tight seal between two mating surfaces. In a GX440 engine, O-rings are used throughout the fuel, oil, and air systems to prevent leaks at joints, covers, and ports. When an O-ring hardens, cracks, or takes a permanent set over time, the seal breaks down — resulting in fluid leaks, pressure loss, or contamination that can affect engine performance or lead to more serious damage if left uncorrected. Replacing a worn O-ring with the correct OEM part restores the integrity of the sealed joint and keeps the engine running as intended.
Part Details
| Part Number | 91305-Z2E-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (31.8X2.4) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX440 | 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.
