The Honda 98079-5485V Spark Plug (J14CR-U) is a genuine OEM replacement built for GX610, GX620, and GX670 horizontal shaft engines, GXV610, GXV620, and GXV670 vertical shaft engines, and the EB11000 generator. As a direct OEM component, this spark plug matches the exact heat range, thread pitch, and electrode specification Honda engineers specified for these large-displacement engines — ensuring dependable ignition every time. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and more than one plug specification may be listed across production runs.
Key Features
- Correct Heat Range for High-Displacement Engines — the J14CR-U designation specifies the precise thermal rating Honda requires for these large-displacement engines, maintaining stable combustion across the full operating range
- Genuine OEM Part — sourced directly from Honda, this spark plug carries the exact electrode gap, thread size, and reach specified for these engines — no adjustment or re-gapping needed out of the box
- Broad Fitment Across Honda's V-Twin and Large Single Lines — listed for the GX610, GX620, GX670, GXV610, GXV620, GXV670, and EB11000 generator; verify your serial number against the fitment table to confirm the correct specification for your unit
- Ignition Reliability — a worn or fouled spark plug causes hard starting, misfires, and increased fuel consumption; replacing it with the correct OEM plug restores clean ignition and smooth power delivery
A spark plug ignites the compressed air-fuel mixture inside the combustion chamber, and the heat range of the plug is as important as the spark itself — a plug that runs too hot risks pre-ignition, while one that runs too cool will foul with carbon deposits. The J14CR-U designation tells you this plug is matched to the thermal demands of Honda's larger engines, including the twin-cylinder GX and GXV 610–670 series and the EB11000 generator. When the plug wears out or becomes fouled, combustion becomes inconsistent, leading to rough running, increased fuel use, and difficult cold starts — replacing it on schedule is one of the most cost-effective ways to keep these engines performing at their best.
Part Details
| Part Number | 98079-5485V |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spark Plug (J14CR-U) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB11000 | All |
| Horizontal Shaft Engine | GX610, GX620, GX670 | All |
| Vertical Shaft Engine | GXV610, GXV620, GXV670 | 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.
