The Honda 98066-56726 Spark Plug (X20FSR-U) is a genuine OEM replacement designed for BF15 and BF9 portable outboard motors. As a direct Honda OEM component, this spark plug carries the X20FSR-U specification — the exact grade Honda engineers selected for consistent ignition in these motors. Confirm your serial number against the fitment table before ordering, as Honda periodically updates parts at serial number breaks.
Key Features
- OEM Ignition Grade — the X20FSR-U heat range and electrode configuration are specified by Honda for the BF15 and BF9, ensuring the spark energy and timing margin these outboard motors are designed around.
- Direct OEM Replacement — this plug threads in exactly as the original, with no gapping guesswork; it leaves the factory set to Honda's specification for these motors.
- Fits BF15 and BF9 Portable Outboard Motors — listed for both the BF15 and BF9; confirm your serial number against the fitment table to ensure this is the correct plug for your specific unit.
- Reliable Cold-Start and Steady-Running Performance — a correctly matched spark plug sustains a clean, consistent spark across the rpm range; a worn or mis-graded plug causes hard starting, rough idle, and misfires under load.
A spark plug is the ignition source inside the combustion chamber of a four-stroke outboard motor. At the end of each compression stroke, the plug fires an electrical spark that ignites the air-fuel mixture, driving the piston down and turning the crankshaft. When a spark plug wears — through electrode erosion, carbon fouling, or cracked insulation — ignition becomes inconsistent, robbing the outboard of power, increasing fuel consumption, and making the motor difficult to start. Replacing the plug at the manufacturer's recommended interval, and using the correct OEM-specified grade such as part number 98066-56726, keeps combustion efficient and the motor running at full output.
Part Details
| Part Number | 98066-56726 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spark Plug (X20FSR-U) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Portable Outboard Motor | BF9, BF15 | 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.
