The Honda 98069-57756 Spark Plug (X22ESR-UB) is a genuine OEM spark plug designed for Honda BF40 and BF50 outboard motors. As a direct Honda OEM component, this spark plug is specified to the exact heat range and electrode configuration Honda engineers selected for these four-stroke outboards. Verify your motor's serial number against the fitment table to confirm that part number 98069-57756 is the correct listing for your unit before ordering.
Key Features
- OEM-Specified Heat Range — the X22ESR-UB designation identifies the precise heat rating Honda selected for the BF40 and BF50, ensuring the electrode runs at the correct temperature to burn cleanly without fouling or pre-igniting
- Direct OEM Replacement — sourced from Honda and built to the same specification as the plug installed at the factory, so this part drops straight into the cylinder head without modification
- Outboard-Matched Design — specified for BF40 and BF50 outboard motors; always match the X22ESR-UB variant designation to your motor's parts list, as Honda may list different plugs across serial ranges
- Ignition Reliability on the Water — a correctly specified spark plug maintains a strong, consistent spark under the load and cooling conditions of marine operation; a worn or mismatched plug can cause hard starting, misfires, or rough running at trolling speeds
A spark plug is the ignition source inside each cylinder of the outboard's engine. At the end of the compression stroke, the ignition system fires a high-voltage charge across the plug's electrode gap, igniting the compressed air-fuel mixture and driving the piston down to produce power. When a spark plug wears, its electrode gap widens, the insulator degrades, or carbon deposits build up on the tip — any of these conditions weakens the spark, leading to incomplete combustion, loss of power, increased fuel consumption, and difficult starting. Replacing a worn plug with the correct Honda OEM unit restores reliable ignition and keeps the outboard running at its intended output across the entire RPM range.
Part Details
| Part Number | 98069-57756 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spark Plug (X22ESR-UB) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF40, BF50 | 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.
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