The Honda 98056-54770 Spark Plug (C4HSB) is a genuine OEM replacement designed for GXH50 horizontal shaft engines. As a direct Honda OEM component, this spark plug is specified to the exact heat range and electrode gap required by the GXH50, ensuring proper ignition performance right out of the box. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and this listing covers specific production ranges of the GXH50.
Key Features
- OEM-Specified Heat Range — manufactured to Honda's exact C4HSB specification, matching the thermal characteristics the GXH50 combustion chamber requires for clean, consistent ignition
- Direct OEM Replacement — sourced directly from Honda, this plug installs without modification and restores the ignition system to its original operating condition
- GXH50 Fitment — listed specifically for the GXH50 horizontal shaft engine; check your serial number against the compatibility table to confirm this is the correct plug for your production range
- Ignition Reliability — a worn or fouled spark plug causes hard starting, misfires, and poor fuel combustion; replacing it with the correct OEM plug restores crisp starts and smooth engine operation
A spark plug is responsible for igniting the air-fuel mixture inside the engine's combustion chamber. In a compact engine like the GXH50, the plug's heat range must be precisely matched to the engine's operating temperature — too hot and the electrode pre-ignites the mixture; too cold and deposits build up rapidly on the tip. When a spark plug wears out, gaps widen, the electrode erodes, and the engine becomes increasingly difficult to start, runs roughly, or loses power under load. Replacing it at the recommended service interval keeps combustion efficient and the engine running at its best.
Part Details
| Part Number | 98056-54770 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spark Plug (C4HSB) |
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.
