The Honda 91303-377-000 is a genuine OEM O-Ring (13.8X2.5) designed for Honda BF8, BF35, BF40, BF45, BF50, BF75, and BF100 outboard motors. As a direct Honda OEM part, this O-Ring (13.8X2.5) is manufactured to the exact dimensions required for a proper seal — ensuring the right fit the first time. Confirm your outboard's serial number against the fitment table before ordering, as Honda supersedes sealing components at specific production breaks. This O-Ring (13.8X2.5) is sold individually.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Honda's exact 13.8 x 2.5 mm dimensional specification, delivering the precise compression and sealing performance the original design demands.
- Direct Replacement — a genuine Honda part engineered to drop into place without rework or modification, restoring the original sealing surface to spec.
- Broad Outboard Fitment — listed for Honda BF8, BF35, BF40, BF45, BF50, BF75, and BF100 outboard motors; always verify your serial number against the fitment table to confirm applicability for your specific unit.
- Critical Leak Prevention — a degraded or damaged O-ring allows fluid to bypass the sealed joint, risking contamination, loss of pressure, or corrosion in a marine environment where a proper seal is essential.
An O-ring is a precision loop seal used throughout Honda outboard motors to prevent fluid or pressure from escaping at joints, ports, and threaded connections. The 13.8 x 2.5 mm dimension refers to the inner diameter and cross-sectional thickness respectively — both critical measurements, as even a small deviation will prevent the ring from seating and sealing correctly. When an O-ring hardens, cracks, or becomes compressed beyond recovery, leaks develop that can allow water intrusion or fluid loss, leading to corrosion or component damage if left unaddressed.
Part Details
| Part Number | 91303-377-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (13.8X2.5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF35, BF40, BF45, BF50, 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.
