The Honda 91203-Z7E-003 Oil Seal (8X14X5) is a genuine OEM sealing component designed for a wide range of Honda equipment, including GX340 and GX390 horizontal shaft engines, EB3800, EB4000, EB5000, and EB6500 generators, EG5000 and EG6500 generators, EM3800, EM4000, EM5000, and EM6500 generators, HS928 and HS1332 two-stage snow blowers, HSS928 and HSS1332 two-stage snow blowers, and the WT40 water pump. As a genuine Honda part, this oil seal is manufactured to the same specification as the original, ensuring a proper fit without modification. Verify your unit's serial number against the fitment table before ordering, as Honda supersedes seals at specific serial breaks across this broad model range.
Key Features
- Genuine OEM Sealing Performance — manufactured by Honda to maintain the correct interference fit and sealing lip geometry for this 8 x 14 x 5 mm application, preventing oil migration past the shaft.
- Direct OEM Replacement — matches the original part's dimensions exactly, allowing installation without machining or adapters across all listed models.
- Broad Honda Compatibility — listed for GX340 and GX390 horizontal shaft engines, multiple EB, EG, and EM generator models, HS928, HS1332, HSS928, and HSS1332 two-stage snow blowers, and the WT40 water pump; confirm your serial number against the fitment table to identify the correct seal for your unit.
- Leak Prevention — a deteriorated or damaged oil seal allows lubricant to escape along the shaft, leading to oil loss, contamination of surrounding components, and accelerated internal wear; replacing it promptly keeps the machine running at its designed oil level.
An oil seal prevents lubricant from escaping around a rotating shaft where it exits a housing. The seal's flexible lip presses against the shaft's surface, forming a barrier that keeps oil inside and contaminants outside. When the sealing lip wears, hardens, or tears, oil bypasses it and collects on the exterior of the machine — an early warning sign that left unaddressed will result in low oil levels, increased friction, and internal damage to bearings and other moving components.
Part Details
| Part Number | 91203-Z7E-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Oil Seal (8X14X5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB3800, EB4000, EB5000, EB6500, EG5000, EG6500, EM3800, EM4000, EM5000, EM6500 | All |
| Horizontal Shaft Engine | GX340, GX390 | All |
| Two-Stage Snow Blower | HS928, HS1332, HSS928, HSS1332 | 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.
