The Honda 90042-ZDJ-800 Stud Bolt (5X91) is a genuine OEM fastener designed for the GXR120 horizontal shaft engine. As a direct Honda OEM component, this stud bolt is manufactured to the exact dimensions Honda specifies for the GXR120 — thread pitch, shank length, and engagement depth are all matched to the original design. Because Honda supersedes fasteners at specific serial breaks, confirm your engine's serial number against the fitment table before ordering to ensure part number 90042-ZDJ-800 is the correct listing for your unit.
Key Features
- Genuine OEM Fastener — sourced directly from Honda, this stud bolt meets the exact thread specification and dimensional tolerance Honda established for the GXR120 engine.
- Exact Dimensional Match — the 5 mm diameter and 91 mm shank length are precisely as Honda designed, ensuring correct clamping engagement without modification.
- GXR120 Fitment — listed for the GXR120 horizontal shaft engine; check your serial number against the fitment table to confirm this is the correct listing for your engine's production range.
- Engine Integrity — a correctly dimensioned stud bolt maintains proper clamp load on the components it secures; an incorrect or worn fastener can allow joint relaxation and lead to leaks or mechanical failure in service.
A stud bolt is a fully threaded or partially threaded fastener that anchors permanently into a tapped bore on one end while accepting a nut on the exposed end to secure a mating component. In the GXR120 horizontal shaft engine, stud bolts are used at critical joint faces where repeated assembly and disassembly would otherwise wear a tapped bore directly in the engine casting. Using the correct OEM stud — matched in diameter, thread pitch, and length — ensures the clamping load is distributed exactly as Honda intended. A fastener that is too short, too long, or cut to the wrong thread will compromise joint integrity and can result in leaks, loosening under vibration, or damage to the casting itself.
Part Details
| Part Number | 90042-ZDJ-800 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Stud Bolt (5X91) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GXR120 | 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.
Honda