The Honda 94305-40102 Spring Pin (4X10) is a genuine OEM replacement designed for a range of Honda equipment including GX25, GX35, and GX50 horizontal shaft engines, the FG110 tiller, HHT25, HHT35, UMC425, and UMC435 trimmers, and the WX10 water pump. As a direct Honda OEM component, this spring pin is manufactured to the exact dimensions required for correct function across the varied assemblies it serves. Honda supersedes parts at serial breaks, so confirm your unit's serial number against the fitment table before ordering. This small but critical fastener keeps the mechanical connections it secures locked precisely in place throughout the operating life of the equipment.
Key Features
- Genuine OEM Dimensions — manufactured to Honda's exact 4 mm × 10 mm specification, ensuring the pin seats and retains correctly in its bore without play or looseness
- Broad Equipment Coverage — listed for GX25, GX35, and GX50 horizontal shaft engines, the FG110 tiller, HHT25, HHT35, UMC425, and UMC435 trimmers, and the WX10 water pump — confirm your model and serial number against the fitment table
- Direct Drop-In Replacement — matches the original Honda part number 94305-40102 for a straightforward swap with no modifications to the surrounding assembly
- Retention Integrity — a spring pin that has worn, collapsed, or gone missing allows the components it locks together to shift under load; replacing it promptly restores the secure mechanical connection the assembly depends on
A spring pin — sometimes called a roll pin or slotted spring pin — is a hollow, slotted cylindrical fastener that compresses slightly as it is driven into its bore and then springs outward to grip the surrounding material. This radial tension locks shafts, levers, gears, or other mating parts in their correct relative positions, preventing rotational or axial movement during operation. When a spring pin shears, collapses, or works loose, the components it was holding can shift out of alignment or disengage entirely, causing erratic operation or mechanical failure in the equipment it serves.
Part Details
| Part Number | 94305-40102 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spring Pin (4X10) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX25, GX35, GX50 | All |
| Tiller | FG110 | All |
| Trimmer | HHT25, HHT35, UMC425, UMC435 | All |
| Water Pump | WX10 | 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.
