The Honda 35120-Z4C-003 Engine Stop Switch Assembly is a genuine OEM component designed for GXH50 horizontal shaft engines. As a direct Honda replacement, this assembly is manufactured to the same specification as the original part, ensuring correct electrical function and mechanical fit from the moment it is installed. Verify your engine's serial number against the fitment table below before ordering to confirm this is the right assembly for your unit.
Key Features
- Genuine Honda OEM Construction — sourced directly from Honda, this switch assembly delivers the correct switch action, terminal configuration, and circuit behavior that the GXH50 ignition circuit demands — no adaptation or guesswork required.
- Direct-Fit Replacement — engineered to match the original mounting points and connector layout of the GXH50, so installation is straightforward and the assembly integrates cleanly with existing wiring.
- Serial Number Verification Recommended — Honda supersedes parts at defined serial breaks; confirm your engine's serial number against the fitment table to ensure part number 35120-Z4C-003 is correct for your specific unit.
- Restored Shutdown Reliability — a worn or failed engine stop switch can prevent the engine from shutting down on command or cause nuisance stalling; replacing it with a genuine assembly restores predictable, dependable engine control.
The Engine Stop Switch Assembly gives the operator direct electrical control over the ignition circuit, allowing the engine to be shut down cleanly by grounding the ignition and cutting the spark. On GXH50 horizontal shaft engines, this switch is the primary means of controlled shutdown, and its condition directly affects how safely and predictably the engine can be stopped. When the switch fails — through internal contact wear, corrosion, or broken wiring — the engine may become difficult or impossible to stop through normal means, or it may cut out unexpectedly during operation. Replacing the assembly with a genuine Honda part restores full, reliable shutdown control.
Part Details
| Part Number | 35120-Z4C-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Engine Stop Switch Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GXH50 | 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.
