The Honda 90017-935-000 Head Bolt (8X70) is a genuine OEM fastener designed for a wide range of Honda equipment, including GX360 horizontal shaft engines, BF75 and BF100 outboard motors, EL5000 and ES6500 generators, EV4010, EV6010, and EVD4010 RV generators, EX5500 generators, H4514, HT3813, and HT4213 lawn tractors, and B75 and BF8 portable outboard motors. As a factory-sourced component, this bolt carries the exact dimensions and thread specification Honda engineers specified at production. Because Honda updates and supersedes parts at production serial breaks, buyers should confirm their unit's serial number against the fitment table before ordering.
Key Features
- Genuine OEM Specification — sourced directly from Honda, so the thread form, shank length, and head dimensions match what left the factory on every listed model.
- Broad Cross-Equipment Fitment — listed for GX360 horizontal shaft engines, BF75 and BF100 outboards, multiple generator and RV generator models, and H-series lawn tractors, including the H4514, HT3813, and HT4213.
- Verify Serial Number Before Ordering — Honda supersedes fasteners at production breaks; check your machine's serial number against the fitment table to confirm part number 90017-935-000 is correct for your unit.
- Direct-Fit Replacement — the 8 x 70 mm dimensions are an exact match to the original, so installation requires no modification to thread size or hole depth.
A head bolt is a critical threaded fastener that draws and retains the cylinder head against the engine block or mating surface, maintaining the clamping load that keeps the head gasket sealed under operating pressure and temperature. When a head bolt stretches, corrodes, or is damaged during service, the clamping load drops — leading to coolant or combustion gas leaks at the head joint, loss of compression, and potential head warpage. Replacing a worn or damaged bolt with the correct OEM piece restores the designed clamping force and protects the integrity of the head seal across the wide range of Honda equipment this part is listed for.
Part Details
| Part Number | 90017-935-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Head Bolt (8X70) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EL5000, ES6500, EX5500 | All |
| Horizontal Shaft Engine | GX360 | All |
| Lawn Tractor | H4514 | 1270385-9999999 |
| Lawn Tractor | HT3813, HT4213 | All |
| Outboard Motor | BF75 | All |
| Portable Outboard Motor | B75, BF8, BF100 | All |
| RV Generator | EV4010, EV6010, EVD4010 | 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.
