The Honda 90042-890-680 Stud Bolt (8X104) is a genuine OEM fastener designed for a wide range of Honda generators, welder generators, horizontal shaft engines, and lawn tractors. This stud bolt is manufactured to Honda's original specifications, ensuring the correct thread form, length, and engagement for the applications it covers. Confirmed fitment includes Honda E2500, E3500, E4500, EB3000, EB4000, EM3000, EM4000, EMS4000, EMS4500, ES3500, ES4500, EV4000, EW170, G300, G400, and HT3810 equipment — verify your unit's serial number against the fitment table to confirm this is the correct stud for your application before ordering.
Key Features
- Genuine Honda OEM Fastener — sourced directly from Honda, this stud bolt carries the exact thread specification and overall length required for correct clamping and engagement across all listed applications.
- Broad Equipment Coverage — listed for Honda generators including the E2500, E3500, EB3000, and EM3000, the EW170 welder generator, G300 and G400 horizontal shaft engines, and the HT3810 lawn tractor.
- Serial Number Verification Recommended — Honda updates fastener specifications at production serial breaks; confirm your unit's serial number against the fitment table to ensure part number 90042-890-680 is the correct stud for your machine.
- Direct OEM Replacement — replaces the original stud without machining, rethreading, or adaptation, restoring proper clamping force and component retention.
A stud bolt is a fully threaded fastener — threaded at both ends or along its full length — that anchors a component to a housing or block, with a nut applied to the exposed end to draw the component tight. Unlike a standard bolt, a stud remains fixed in the base material, providing a consistent and repeatable clamping point each time a component is removed and reinstalled. When a stud becomes stripped, corroded, or broken, it can compromise the integrity of the joint it holds and make reassembly difficult or impossible. Replacing a damaged stud with the correct OEM piece restores the joint to its original clamping specification and prevents leaks, looseness, or component damage in service.
Part Details
| Part Number | 90042-890-680 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Stud Bolt (8X104) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EV4000 | 1000001-1302192 |
| Generator | E3500, E4500, ES3500, ES4500 | 1091035-9999999 |
| Generator | E2500 | 1106023-9999999 |
| Generator | EB3000, EB4000, EM3000, EM4000, EMS4000, EMS4500 | All |
| Horizontal Shaft Engine | G400 | 1091035-9999999 |
| Horizontal Shaft Engine | G300 | 1106023-9999999 |
| Lawn Tractor | HT3810 | All |
| Welder Generator | EW170 | 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.
