The Honda 90303-GC2-630 Flange Cap Nut (5MM) is a genuine OEM fastener designed for BF2 portable outboard motors. As a direct Honda replacement, this nut is manufactured to the exact dimensions and specification Honda requires, ensuring correct seating and retention in the application it was built for. Confirm part number 90303-GC2-630 against your motor's serial number using Honda's fitment table before ordering, as Honda updates hardware specifications at serial breaks.
Key Features
- Genuine OEM Honda Hardware — sourced directly from Honda, this Flange Cap Nut (5MM) meets the exact dimensional requirements for the BF2 portable outboard motor, with no guesswork on thread pitch or flange diameter.
- Exact Replacement Fit — designed as a like-for-like swap, this fastener installs without modification and seats to the same specification as the original.
- Serial Number Verification Recommended — Honda revises hardware across production runs, so cross-reference your BF2 motor's serial number against the fitment table to confirm this is the correct fastener for your unit.
A flange cap nut combines a built-in flange with a closed cap end. The flange distributes clamping load across a wider bearing surface than a standard nut, reducing the risk of loosening under vibration — an important characteristic in a marine outboard environment where the motor is subject to continuous engine and water forces. The closed cap end protects the thread from the elements. When a fastener of this type becomes stripped, corroded, or lost, replacing it with the correct OEM part ensures the joint retains its original holding strength.
Part Details
| Part Number | 90303-GC2-630 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flange Cap Nut (5MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Portable Outboard Motor | BF2 | 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.
