The Honda 94251-04000 Lock Pin (4MM) is a genuine OEM fastening pin designed for a wide range of Honda engines, generators, tillers, snow blowers, outboard motors, and lawn mowers. As a genuine OEM component, this pin is manufactured to Honda's exact dimensional specifications, ensuring it seats and retains correctly in every application it is listed for. This part is confirmed for equipment including the GX360 horizontal shaft engine, GXV50 and GXV57 vertical shaft engines, BF2 and BF20 portable outboard motors, HS624, HS724, HS828, HS928, HS1132, and HS1332 two-stage snow blowers, EB3000, EB4000, EL5000, EM3000, EM4000, EM500, EM600, EMS4000, EMS4500, ES6500, and EX5500 generators, EW170 welder generator, F28, FR500, and FR700 tillers, and the HR17 lawn mower — always confirm your unit's serial number against the fitment table before ordering.
Key Features
- Genuine OEM Fit — manufactured by Honda to exact dimensional tolerances, so the pin locks and releases as designed with no guesswork on sizing.
- 4MM Specification — the 4MM diameter is the critical match point; verify this against your parts diagram before ordering, especially where multiple pin sizes are used in the same machine.
- Broad Cross-Equipment Coverage — listed across Honda generators, tillers, snow blowers, outboard motors, lawn mowers, and bare engines, including the GX360, HS-series, BF20, and FR-series tillers.
- Serial Number Verification Recommended — Honda supersedes small hardware at production breaks; check your machine's serial number against the fitment table to confirm this is the correct pin for your unit.
- Retention When It Counts — a worn, bent, or missing lock pin allows the components it secures to shift or disengage; replacing it promptly restores correct retention and keeps assemblies operating as designed.
A lock pin is a small-diameter retaining pin that passes through aligned holes in two mating components to prevent relative movement, rotation, or separation between them. Once in place, it holds the assembly in its correct position during operation, and its removal allows controlled disassembly for service. When a lock pin wears, bends, or is lost, the components it was holding can shift out of alignment or disengage entirely, leading to erratic operation or mechanical damage to surrounding parts. Replacing a worn or missing pin with the correct OEM part restores the designed retention immediately.
Part Details
| Part Number | 94251-04000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Lock Pin (4MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EM500, EM600 | 1000001-1061704 |
| Generator | EB3000, EB4000, EL5000, EM3000, EM4000, EMS4000, EMS4500, ES6500, EX5500 | All |
| Horizontal Shaft Engine | GX360 | All |
| Lawn Mower | HR17 | All |
| Portable Outboard Motor | BF2, BF20 | All |
| Tiller | F28, FR500, FR700 | All |
| Two-Stage Snow Blower | HS624, HS724, HS828, HS928, HS1132, HS1332 | All |
| Vertical Shaft Engine | GXV50, GXV57 | 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.
