The Honda 90452-GK4-600 Plain Washer (5MM) is a genuine OEM component designed for Honda BF-series and BFP-series outboard motors. As a direct Honda OEM part, this washer is manufactured to the exact dimensions Honda specifies, ensuring proper load distribution and consistent clamping wherever a 5MM plain washer is called out in the service manual. This part is listed for a wide range of Honda outboards — including BF2, BF4, BF5, BF6, BF8, BF9, BF15, BF20, BF25, BF30, BF35, BF40, BF45, BF50, BF75, BF90, BF100, BF115, BF130, BFP8, BFP9, BFP15, and BFP20 — so confirm the part number 90452-GK4-600 against your motor's parts diagram before ordering.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this washer meets the exact dimensional specification called out in Honda's own service documentation for BF and BFP outboard motors.
- Correct 5MM sizing — the 5MM nominal sizing matters in fastener assemblies; using an undersized or oversized washer can compromise clamping load and seating, so matching this exact part number ensures the right fit in the right location.
- Broad outboard fitment — listed across Honda's BF and BFP portable and full-size outboard lines, from the compact BF2 to the BF130; always verify against your motor's parts diagram since Honda supersedes hardware at production breaks.
A plain washer serves as a bearing surface under a bolt head or nut, spreading the clamping load across a wider area to prevent fastener pull-through, surface damage, and uneven stress on the components being joined. In marine outboard applications, using the correct washer size is particularly important because fastener assemblies are subject to vibration, water exposure, and repeated service cycles. When a washer is missing, wrong-sized, or deformed, the fastener joint can loosen prematurely or cause surface damage that complicates future service work.
Part Details
| Part Number | 90452-GK4-600 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Plain Washer (5MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF25, BF30, BF35, BF40, BF45, BF50, BF75, BF90, BF115, BF130 | All |
| Portable Outboard Motor | BFP20 | 1404217-9999999 |
| Portable Outboard Motor | BF100 | 1706694-9999999 |
| Portable Outboard Motor | BF2, BF4, BF5, BF6, BF8, BF9, BF15, BF20, BFP8, BFP9, BFP15 | 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.
