The Honda 91201-Z7B-003 Oil Seal (30X46X8) is a genuine OEM component designed for a wide range of Honda engines and power equipment, including GX240 and GX270 horizontal shaft engines, the EG4000 generator, WT30 water pump, FRC800 tiller, HS928 and HS1332 two-stage snow blowers, and HSS928 and HSS1332 two-stage snow blowers. As a factory-original part, this oil seal is manufactured to Honda's exact dimensions — 30 mm inner diameter, 46 mm outer diameter, 8 mm width — ensuring a proper sealing fit in the application it was built for. Because Honda supersedes parts at serial breaks, buyers should verify their unit's serial number against the fitment table before ordering. This seal is a direct OEM replacement sourced through Honda's authorized parts network.
Key Features
- OEM Sealing Integrity — manufactured to Honda's exact dimensional specification (30×46×8 mm), delivering the lip profile and interference fit the application requires to prevent oil migration
- Broad Cross-Equipment Fitment — listed for GX240 and GX270 horizontal shaft engines, the EG4000 generator, WT30 water pump, FRC800 tiller, and HS928, HS1332, HSS928, and HSS1332 two-stage snow blowers, including the exact part number 91201-Z7B-003
- Verify Your Serial Number — Honda updates part supersessions at production serial breaks; confirm your machine's serial number against the fitment table to ensure this is the correct seal for your unit
- Prevents Oil Loss — a worn or damaged oil seal allows lubricant to escape past rotating shafts, leading to low oil levels, accelerated internal wear, and potential engine or equipment damage
An oil seal is a precision-fit lip seal that wraps around a rotating shaft — typically a crankshaft or gearbox shaft — to keep engine or gearbox oil contained while blocking dirt, moisture, and debris from entering. The seal's flexible lip maintains constant contact with the shaft surface, forming a dynamic barrier that holds up under continuous rotation and operating heat. When this seal wears, cracks, or loses its lip tension, oil escapes along the shaft, compromising lubrication and contaminating surrounding components — making timely replacement essential to keeping the machine running cleanly and protecting internal parts from wear.
Part Details
| Part Number | 91201-Z7B-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Oil Seal (30X46X8) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EG4000 | All |
| Horizontal Shaft Engine | GX240, GX270 | All |
| Tiller | FRC800 | All |
| Two-Stage Snow Blower | HS928, HS1332, HSS928, HSS1332 | All |
| Water Pump | WT30 | 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.
