The Honda 90031-883-000 Flange Bolt (8x16) is a genuine OEM fastener used across a wide range of Honda generators, horizontal and vertical shaft engines, lawn mowers, tractors, and water pumps. As a direct Honda OEM part, this bolt is manufactured to the exact dimensions Honda specifies, ensuring proper thread engagement and clamping load wherever it is used. This Flange Bolt (8x16) is listed for an extensive range of equipment including GXV270, GXV340, and GXV390 vertical shaft engines, G150 and G200 horizontal shaft engines, multiple generator models, lawn mowers, commercial mowers, lawn tractors, and water pumps — always verify your model and serial number against the fitment table before ordering. Because Honda updates hardware at production serial breaks, confirming your serial number is the surest way to receive the right part.
Key Features
- Genuine Honda OEM Hardware — sourced directly from Honda, this flange bolt meets the exact thread pitch, shank length, and flange diameter called out in Honda's service documentation for each application.
- Integrated Flange Design — the built-in bearing flange distributes clamping load across a wider surface area, eliminating the need for a separate washer and maintaining consistent holding force at the joint.
- Broad Cross-Equipment Fitment — listed for Honda generators, GXV-series vertical shaft engines, G-series horizontal shaft engines, walk-behind and commercial mowers, lawn and multi-purpose tractors, and water pumps, including models such as the GXV390, HRC7013, WB30, and EG2200.
- Serial Number Verification Recommended — Honda supersedes fastener part numbers at production breaks; check your unit's serial number against the compatibility table to confirm this is the correct bolt for your specific machine.
A flange bolt combines a standard hex bolt with an integral wide-diameter flange beneath the head, which acts as a built-in washer to spread the clamping load and resist loosening under vibration. In small-engine equipment and power products, this type of fastener is used wherever a secure, vibration-resistant joint is needed without the extra assembly step of adding a separate washer. When a flange bolt is missing, damaged, or replaced with a non-OEM substitute of the wrong thread or length, it can result in improper clamping, loosening over time, or damage to the mating components — all of which can lead to service interruptions or component failure.
Part Details
| Part Number | 90031-883-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flange Bolt (8x16) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Commercial Mower | HRC7013, HRC7113 | All |
| Generator | E1500, ED1000, EG1000, EG1400, EG1500, EG2200, EM1600, EM1800, EM2200 | All |
| Horizontal Shaft Engine | G200 | 1543278-9999999 |
| Horizontal Shaft Engine | G150 | All |
| Lawn Mower | HRA21, HRB215, HRM215, HRR216, HRT216 | All |
| Lawn Tractor | H4013 | All |
| Multi-Purpose Tractor | H5013, RT5000 | All |
| Vertical Shaft Engine | GXV270, GXV340, GXV390 | All |
| Water Pump | WA20, WB20, WB30, WT20 | 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.
