The Honda 91303-MG7-003 O-Ring (13.8X2.5) is a genuine OEM seal designed for BF75 and BF100 outboard motors. As a direct Honda OEM component, this o-ring is manufactured to the exact dimensions and material specification Honda requires for a proper, leak-free seal. Confirm your motor's serial number against the fitment table before ordering, as Honda supersedes sealing components at specific serial breaks.
Key Features
- Exact OEM Dimensions — manufactured to Honda's specified 13.8 x 2.5 mm profile, ensuring the sealing surface engages correctly without deformation or gap
- Genuine Honda OEM Part — sourced directly from Honda, carrying part number 91303-MG7-003 and the material consistency required for a reliable marine seal
- Outboard Motor Fitment — listed for BF75 and BF100 outboard motors; verify your serial number against the fitment table to confirm the correct application for your unit
- Sealing Integrity — a correctly sized o-ring prevents fluid leaks that can lead to contamination, loss of pressure, or internal damage in a marine outboard environment
An o-ring is a precision loop seal that sits in a machined groove and compresses between two mating surfaces to prevent the passage of fluid or gas. In a marine outboard motor such as the BF75 and BF100, o-rings are used throughout the cooling, lubrication, and fuel systems wherever two components meet and a positive seal is required. When an o-ring ages, takes a permanent set, or is damaged during service, the seal fails — allowing fluid to escape or water to enter — which can quickly escalate into more serious mechanical damage if not corrected with the right replacement part.
Part Details
| Part Number | 91303-MG7-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (13.8X2.5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF75 | All |
| Portable Outboard Motor | 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.
