The Honda 91372-733-003 O-Ring (40.5X2.5) is a genuine OEM sealing component designed for Honda F401, F501, FC600, FG400, and FG500 tillers. As a factory-sourced part, it is manufactured to the exact dimensions Honda specifies, ensuring a proper seal wherever this ring is fitted in your tiller. Confirm part number 91372-733-003 against your tiller's serial number and parts diagram before ordering to ensure this is the correct variant for your unit.
Key Features
- Exact-Dimension Sealing — manufactured to the 40.5 x 2.5 mm specification Honda requires, so this O-ring seats fully in its groove and holds a fluid-tight seal without distortion or leakage
- Genuine OEM Sourcing — sourced directly from Honda, carrying the same part number 91372-733-003 used in Honda's own service network and parts diagrams
- Broad Tiller Coverage — listed for the F401, F501, FC600, FG400, and FG500 tillers; verify your serial number against the fitment table to confirm this ring applies to your specific production run
- Leak Prevention — a correctly seated O-ring maintains internal fluid containment; a cracked, swollen, or flattened ring allows fluid to escape, leading to loss of lubrication or hydraulic function and accelerated wear
An O-ring is a circular elastomeric seal that fits into a machined groove between two mating surfaces or around a shaft, valve, or port to prevent fluid from escaping past the joint. In a tiller, O-rings appear throughout the transmission, gear case, and fluid passages, where they maintain oil or fluid containment under the pressures and vibrations generated during operation. When an O-ring hardens, cracks, or takes a permanent set from age or heat, it loses its ability to conform to the mating surface, and fluid begins to bypass the seal — leading to leaks, reduced lubrication, and potential damage to the components the fluid is meant to protect.
Part Details
| Part Number | 91372-733-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (40.5X2.5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Tiller | F401, F501, FC600, FG400, FG500 | 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.
