The Honda 91322-PT0-003 O-Ring (17.8X1.9) is a genuine OEM sealing component designed for the HT3810, HT3813, and HT4213 lawn tractors. As a direct Honda OEM part, this O-ring is manufactured to the exact dimensions and material spec required for a proper, leak-free seal. Sourced through Honda's authorized parts network, it is the correct replacement for your tractor when the time comes to restore a sealing surface. Always verify your tractor's serial number against the fitment table before ordering, as Honda updates parts at serial breaks.
Key Features
- Exact-Dimension OEM Seal — at 17.8 x 1.9 mm, this O-ring matches the precise cross-section Honda specifies for the sealing surfaces it serves, ensuring the correct compression and contact when installed.
- Genuine Honda OEM Part — supplied directly through Honda's authorized parts chain, so there is no guesswork about whether the sizing or material grade will match the original component.
- Fits HT3810, HT3813, and HT4213 Lawn Tractors — confirmed fitment across all three Honda lawn tractor models; check your serial number against the fitment table to confirm the correct part number for your specific unit.
- Restore a Sound Seal — a worn or hardened O-ring allows fluid to bypass a sealing surface, leading to leaks and potential damage; replacing it with this part returns the joint to its original sealing condition.
An O-ring is a circular elastomeric seal that fits into a machined groove, compressing between two mating surfaces to prevent fluid from passing through the joint. In a lawn tractor, O-rings are used throughout fluid-carrying systems — wherever a fitting, housing, or component interface must remain leak-tight during operation. When an O-ring ages, it hardens and loses its elasticity, causing it to no longer fill the groove under compression. The result is a slow or sudden fluid leak at that joint. Replacing the O-ring with a correctly sized part restores the seal and prevents fluid loss that could otherwise lead to more serious mechanical problems.
Part Details
| Part Number | 91322-PT0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (17.8X1.9) |
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.
