The Honda 90855-921-300 Sealing Plug (10MM) is a genuine OEM component designed for a range of Honda portable outboard motors, outboard motors, vertical shaft engines, and commercial mowers, including the B75, BF75, BF100, BF8, GXV610, GXV620, GXV670, HRC7018, and HRC7020. As a direct Honda OEM part, it is manufactured to the same specifications as the original, ensuring a correct, consistent fit with no guesswork. Confirm your machine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and this listing covers multiple models across different product families.
Key Features
- Genuine Honda OEM Sealing — manufactured to Honda's original specification, ensuring the plug seats correctly and maintains a proper fluid-tight closure at the 10MM port
- Broad Multi-Family Fitment — listed for Honda B75, BF8, BF75, and BF100 portable outboard and outboard motors, GXV610, GXV620, and GXV670 vertical shaft engines, and HRC7018 and HRC7020 commercial mowers; verify your specific unit against the fitment table
- Serial Number Verification Recommended — Honda supersedes parts across production runs, so cross-check your machine's serial number with the compatibility table to confirm this is the correct plug for your unit
- Direct OEM Replacement — sourced directly from Honda.
A sealing plug closes off an access or drain port in the engine, motor, or equipment housing, preventing fluid leakage and keeping contaminants out of the system. When the original plug is missing, damaged, or fails to seat properly, oil, water, or other fluids can escape, leading to reduced fluid levels and potential internal damage. Replacing a worn or compromised sealing plug restores the integrity of the closed system and keeps the equipment operating as intended.
Part Details
| Part Number | 90855-921-300 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Sealing Plug (10MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Commercial Mower | HRC7018, HRC7020 | All |
| Outboard Motor | BF75 | All |
| Portable Outboard Motor | B75, BF8, BF100 | All |
| Vertical Shaft Engine | GXV610, GXV620, GXV670 | 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.
