The Honda 91201-Z1C-003 Oil Seal (35X52X8) is a genuine OEM component designed for a wide range of Honda generators, engines, snow blowers, and water pumps — including GX340 and GX390 horizontal shaft engines, GXV340 and GXV390 vertical shaft engines, and generator models spanning the EB, EG, EM, EU, and EU inverter lines. As a direct Honda OEM part, this oil seal meets the exact dimensional and material standards of the original, ensuring the sealing integrity Honda engineered into these machines from the day they left the factory. Because Honda supersedes parts at production serial breaks, confirm your machine's serial number against the fitment table before ordering — especially across this broad a range of equipment. The size designation (35X52X8) identifies the specific variant; match it to your unit's parts diagram to be certain this is the correct seal for your application.
Key Features
- Exact OEM Sealing Dimensions — the 35 mm inner diameter, 52 mm outer diameter, and 8 mm width are the same dimensions Honda specified for this application, so the seal seats fully and creates consistent contact with the rotating shaft
- Broad Genuine OEM Fitment — listed for GX340 and GX390 horizontal shaft engines, GXV340 and GXV390 vertical shaft engines, HS928, HS1332, HS1336, HSM1336, HSS928, and HSS1332 two-stage snow blowers, EB, EG, EM, and EU-series generators and inverter generators, and WT40 water pumps — including both conventional and inverter generator designs
- Verify Your Variant — the (35X52X8) size designation is the identifying qualifier; cross-reference it with your machine's Honda parts diagram before installing to confirm this is the right seal for your serial range
- Leak Prevention — a worn or hardened oil seal allows oil to escape past the shaft, leading to oil loss, contamination of surrounding components, and engine or equipment damage if left unchecked
An oil seal is a precision lip-type seal that closes the gap between a rotating shaft and its housing, keeping lubricating oil inside while blocking dirt, moisture, and debris from entering. In engines, generators, snow blowers, and pumps, the seal is fitted at a crankshaft or output shaft opening where any leak would result in oil loss and potential bearing or internal component damage. Over time, the sealing lip can harden, crack, or deform from heat cycling and normal wear, causing seepage that worsens quickly under operating load. Replacing a failed oil seal with the correct genuine OEM part restores the original sealing boundary and protects the lubricated components it encloses.
Part Details
| Part Number | 91201-Z1C-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Oil Seal (35X52X8) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB3800, EB4000, EB5000, EB6500, EG5000, EG6500, EM3800, EM4000, EM5000, EM6500 | All |
| Horizontal Shaft Engine | GX340, GX390 | All |
| Inverter Generator | EB7000, EM7000, EU6500, EU7000 | All |
| Two-Stage Snow Blower | HS928, HS1332, HS1336, HSM1336, HSS928, HSS1332 | All |
| Vertical Shaft Engine | GXV340, GXV390 | All |
| Water Pump | WT40 | 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.
