The Honda 98066-55716 Spark Plug (DR-5HS) is a genuine OEM ignition component designed for Honda BF8, BF9, BF15, BF75, and BF100 outboard motors. As a factory-specified part, this spark plug carries the exact heat range and electrode configuration Honda engineers selected for these outboards, making it a straight swap during routine tune-ups or when a fouled plug is cutting into performance. Confirm your outboard's serial number against the fitment table before ordering, as Honda supersedes parts at production breaks and more than one plug specification may cover this motor range.
Key Features
- OEM Heat Range and Electrode Spec — the DR-5HS designation is Honda's own specification for these outboards, ensuring the correct thermal rating for marine duty cycles and proper ignition timing
- Drop-In Replacement — threads and reach match the original cylinder head specification on BF8, BF9, BF15, BF75, and BF100 outboard motors, so installation is straightforward with no fitting adjustments
- Outboard-Specific Fitment — listed for Honda portable and standard outboard motors including BF8, BF9, BF15, BF75, and BF100; verify your serial number against the fitment table to confirm the correct plug for your production run
- Combustion Efficiency — a properly functioning spark plug delivers a consistent, strong spark across the full throttle range; a worn or fouled plug causes hard starting, rough idling, misfires, and reduced fuel economy on the water
A spark plug is the final link in the ignition circuit, igniting the compressed air-fuel mixture inside the combustion chamber to drive the piston and produce power. In a marine outboard environment, spark plugs face salt air, moisture, and wide-open-throttle demands that accelerate electrode wear and deposit buildup. When a plug weakens — whether from a worn electrode, cracked insulator, or fouled tip — the outboard may become difficult to start, run unevenly at low RPM, or lose top-end power; replacing it with the correct OEM specification plug restores clean, reliable ignition from idle to wide-open throttle.
Part Details
| Part Number | 98066-55716 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spark Plug (DR-5HS) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF75 | All |
| Portable Outboard Motor | BF8, BF9, BF15, BF100 | 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.
