The Honda 90120-HW1-671 Flange Bolt (8X45) is a genuine OEM fastener designed for Honda BF75, BF90, and BF100 outboard motors. As a factory-original component, this bolt is manufactured to Honda's exact dimensional specifications, ensuring a proper fit in the application it was engineered for. Honda supersedes parts at production breaks, so confirm part number 90120-HW1-671 against your motor's serial number in the fitment table before ordering. Sourcing the correct OEM fastener matters on marine equipment, where a mismatched bolt can compromise the integrity of the assembly it secures.
Key Features
- Genuine OEM Fastener — sourced directly from Honda, this bolt meets the exact thread pitch, shank length, and flange diameter specified for these outboard applications
- Flange Design — the integrated flange distributes clamping load across a wider bearing surface compared to a standard hex bolt, reducing the risk of fastener loosening in a marine environment
- Outboard Fitment — listed for Honda BF75, BF90, and BF100 outboard motors; verify your motor's serial number against the compatibility table to confirm this is the correct bolt for your unit
- Serial-Range Awareness — Honda updates parts at serial number breaks, so always cross-reference your motor's serial number before ordering to ensure you receive the right fastener
A flange bolt combines a standard hex bolt with an integrated wide washer-like flange beneath the head. The flange spreads clamping force over a larger surface area, which helps maintain consistent torque retention and reduces the chance of the fastener working loose under vibration — a common challenge on outboard motors exposed to the constant movement and stress of marine operation. When a flange bolt is missing, damaged, or replaced with an incorrect fastener, the assembly it holds may shift, loosen, or fail to maintain the seal or alignment the motor depends on.
Part Details
| Part Number | 90120-HW1-671 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flange Bolt (8X45) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF75, BF90 | 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.
