The Honda 91301-Z0A-003 O-Ring (7.5X2.3) is a genuine OEM sealing component designed for GCV520, GCV530, GXV520, and GXV530 vertical shaft engines. As a direct Honda OEM part, it is manufactured to the exact dimensions and material specifications required for a proper seal in these engines. This O-ring matches the original installed part, so there is no guesswork on sizing or fitment — the 7.5 x 2.3 mm measurement is specific to the application it was designed for. Verify your engine's serial number against the fitment table to confirm this is the correct listing for your unit before ordering.
Key Features
- Exact OEM Dimensions — at 7.5 x 2.3 mm, this O-ring meets Honda's specified cross-section and inner diameter for a leak-free seal in GCV520, GCV530, GXV520, and GXV530 engines
- Genuine Honda OEM Part — sourced directly from Honda, ensuring the material compound and durometer match what was installed at the factory
- Sealing Integrity — a correctly sized O-ring maintains fluid or pressure containment in the engine; an undersized, oversized, or degraded ring allows leaks that can lead to oil loss or loss of compression depending on the application
- Serial Number Verification Recommended — Honda updates parts at production serial breaks, so check your engine's serial number against the fitment table to confirm part number 91301-Z0A-003 is the right O-ring for your engine
An O-ring is a circular elastomeric seal that sits in a machined groove and forms a pressure-tight barrier between two mating surfaces or around a shaft or port. In vertical shaft engines such as the GCV520, GCV530, GXV520, and GXV530, O-rings are used throughout the engine to prevent oil, fuel, or air from escaping at joints, covers, and fittings. When an O-ring hardens, cracks, or becomes deformed with age, the seal it provides breaks down, allowing leaks that can result in oil loss, contamination, or reduced engine performance. Replacing a worn O-ring with the correct OEM part restores the original sealing condition and prevents further damage to the engine.
Part Details
| Part Number | 91301-Z0A-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (7.5X2.3) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GCV520, GCV530, GXV520, GXV530 | 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.
