The Honda 90001-MZ8-U40 Flange Bolt (6X18) is a genuine OEM fastener designed for the BF350 outboard motor. As a direct Honda OEM part, it is manufactured to the exact specifications called out in Honda's marine parts catalog, ensuring the correct thread pitch, shank length, and flange diameter for its application. Confirm your outboard's serial number against the fitment table before ordering to make sure part number 90001-MZ8-U40 is the right specification for your unit.
Key Features
- Genuine OEM Fastener — sourced directly from Honda, matching the exact dimensions specified for the BF350 outboard motor
- Integrated Flange Design — the built-in flange distributes clamping load evenly without the need for a separate washer, maintaining secure retention at the joint
- Direct OEM Replacement — listed under part number 90001-MZ8-U40 in Honda's marine parts catalog for the BF350; verify your serial number against the fitment table to confirm applicability
A flange bolt combines a standard bolt with a wide, washer-like flange at the base of the head. The flange spreads the clamping force over a broader surface area, reducing the risk of the fastener pulling through or damaging the mating surface during assembly. On an outboard motor like the BF350, where components are subject to continuous vibration and marine operating conditions, using the correct OEM-specified fastener ensures joint integrity is maintained over time. Substituting an incorrect bolt length or thread specification risks under- or over-clamping the joint, which can lead to loosening or component damage during operation.
Part Details
| Part Number | 90001-MZ8-U40 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flange Bolt (6X18) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF350 | 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.
