The Honda 91256-881-004 Oil Seal (32X37X7) is a genuine OEM replacement designed for BF75, BF100, and BF8 portable outboard motors. As a factory-sourced component, this seal is manufactured to Honda's exact dimensional specifications, ensuring it correctly mates with the surfaces it is designed to protect. Verify your outboard's model and serial number against the fitment table before ordering, as Honda supersedes sealing components at specific production breaks — confirming part number 91256-881-004 against your unit is the surest way to get the right seal the first time.
Key Features
- Genuine OEM Sealing Integrity — sourced directly from Honda, this seal meets the dimensional tolerances required to maintain a leak-free barrier in a marine outboard environment where water intrusion and fluid loss are constant concerns
- Exact Dimensional Fit — the 32X37X7 designation specifies the inner diameter, outer diameter, and width, making it straightforward to confirm this is the correct seal for your application before installation
- Outboard Fitment — listed for the BF75, BF100, and BF8 outboard motors; check your serial number against the compatibility table to confirm applicability to your specific unit
- Prevents Oil and Fluid Loss — a deteriorated or damaged seal allows gear oil to escape the lower unit and water to enter, leading to bearing and gear damage that can put an outboard out of service entirely
An oil seal in an outboard motor's lower unit keeps gear lubricant inside the gearcase while preventing water from the surrounding marine environment from migrating inward. The seal works by maintaining a continuous, compressed interface between a rotating shaft and its housing, holding fluid on one side and contaminants on the other. When this seal hardens, cracks, or loses its lip contact, gear oil escapes into the water and water works its way into the gearcase — a condition that accelerates corrosion and wear on gears and bearings and can result in catastrophic lower-unit failure if left unaddressed.
Part Details
| Part Number | 91256-881-004 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Oil Seal (32X37X7) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF75 | All |
| Portable Outboard Motor | BF8, BF100 | 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.
