The Honda 91305-MC7-000 O-Ring (39.5X5) is a genuine OEM sealing component designed for HT3810, HT3813, and HT4213 lawn tractors. As a direct Honda OEM part, it is manufactured to the exact dimensions and material specification required for proper sealing in the application it serves. Confirm your tractor's serial number against the fitment table before ordering, as Honda may list different O-rings across production serial ranges for these models.
Key Features
- Exact OEM Dimensions — manufactured to Honda's precise 39.5 x 5 mm specification, ensuring the sealing cross-section and diameter match the groove geometry in the original application
- Genuine Honda Part — sourced directly from Honda's OEM parts catalogue, so there is no guesswork about material grade or dimensional conformance
- Fits HT3810, HT3813, and HT4213 Lawn Tractors — listed for all three HT-series tractor models; verify your serial number against the fitment table to confirm the correct O-ring for your specific unit
- Sealing Integrity — a worn or damaged O-ring of this size allows fluid or pressure to bypass the sealing point, leading to leaks and potential damage to surrounding components
An O-ring is a loop-shaped sealing element seated in a machined groove, where it is compressed between two mating surfaces to prevent fluid or pressure from passing through the joint. In a lawn tractor application, O-rings of this size typically appear in hydraulic or fluid-carrying systems where maintaining a leak-free seal is essential to consistent performance. When an O-ring degrades, flattens, or takes a set over time, it loses its ability to conform to the mating surfaces, and leakage follows — making timely replacement with a correctly sized part the straightforward fix.
Part Details
| Part Number | 91305-MC7-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (39.5X5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | HT3810, HT3813, HT4213 | 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.
