The Honda 91351-881-000 O-Ring (66mm) is a genuine OEM sealing component designed for BF75, BF100, and BF8 outboard motors. As a factory-original part, this O-ring is manufactured to Honda's exact dimensions, ensuring a dependable seal without the guesswork of fitting an off-spec replacement. This O-ring is compatible with BF75, BF100, and BF8 outboards — confirm part number 91351-881-000 against your motor's parts diagram before ordering, as Honda supersedes components at production breaks.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Honda's exact 66mm specification, so the O-ring seats and compresses the way the joint was designed to seal, without improvising with an undersized or oversized substitute.
- Direct OEM Replacement — sourced directly from Honda and matched to part number 91351-881-000, this O-ring drops into place as the original did, with no trimming or reworking required.
- Outboard Motor Fitment — designed for BF75, BF100, and BF8 Honda outboard motors; verify your motor's serial number against the fitment table, as Honda revises part applicability across production runs.
- Leak Prevention — a correctly seated O-ring maintains fluid separation at its joint; a cracked, flattened, or swollen O-ring allows leaks that can lead to fluid contamination or loss of system pressure in the motor.
An O-ring is a precision loop of elastomeric material that sits in a machined groove and creates a fluid-tight seal when compressed between two mating surfaces. In Honda outboard motors, O-rings are used throughout the powerhead, cooling circuit, and other fluid-carrying assemblies to prevent water or oil from escaping past joints and covers. When an O-ring ages, hardens, or takes a set from heat and compression cycles, it loses its ability to conform to the mating surfaces — resulting in seepage or outright leaks that can damage surrounding components if left unaddressed. Replacing a worn O-ring with the correct-dimensioned genuine Honda part restores the original seal and keeps the motor performing as intended.
Part Details
| Part Number | 91351-881-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (66mm) |
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.
