The Honda 91202-740-003 Oil Seal (20X31X7) is a genuine OEM component designed for GX160 horizontal shaft engines, HP250 power carriers, and HP400 power carriers. As a direct Honda OEM part, this seal is manufactured to the exact dimensions and material specifications Honda requires for these applications. Confirm part number 91202-740-003 against your machine's serial number using the fitment table before ordering, as Honda supersedes parts at serial breaks and the correct seal depends on your production date. This Oil Seal (20X31X7) ships as a single seal sized 20 mm inner diameter by 31 mm outer diameter by 7 mm wide — match all three dimensions to your application.
Key Features
- Exact OEM Dimensions — manufactured to Honda's 20×31×7 mm specification, ensuring the sealing lip seats correctly against the rotating shaft without leakage or premature wear
- Genuine Honda Part — sourced directly from Honda, so the lip profile, interference fit, and sealing material are identical to what left the factory
- Broad Fitment — listed for GX160 horizontal shaft engines, HP250 power carriers, and HP400 power carriers; verify your serial number against the fitment table to confirm the right seal for your unit
- Leak Prevention — a properly seated oil seal keeps lubricant inside the engine or gearcase where it belongs; a worn or damaged seal allows oil to escape, leading to lubrication loss and accelerated internal wear
An oil seal is a precision lip seal that fits between a rotating shaft and a stationary housing to retain lubricating oil while blocking contaminants such as dirt and moisture from entering. The sealing lip rides against the shaft surface under slight spring tension, forming a dynamic barrier that holds even as the shaft spins at operating speed. When the seal hardens, cracks, or loses its interference fit with the bore, oil migrates past it — and if that loss goes unnoticed, the engine or gearcase can run low on lubrication, causing serious internal damage.
Part Details
| Part Number | 91202-740-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Oil Seal (20X31X7) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX160 | All |
| Power Carrier | HP250, HP400 | 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.
