Ignition Coil for Yamaha 9.9HP/15HP Outboard Motors – Fits Yamaha 2-Stroke Engines
Ignition Coil for Yamaha 9.9HP/15HP Outboard Motors – Fits Yamaha 2-Stroke Engines is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This Ignition Coil for Yamaha 9.9HP/15HP Outboard Motors is a direct-fit replacement for compatible Yamaha 2-stroke engines. It is engineered to restore spark energy for reliable starting and smooth engine operation, ensuring your outboard performs as expected.
This component serves as a direct cross-reference for Yamaha OEM part numbers 63V-85570-00 and 6B4-85570-00.
- Installs directly in place of the factory coil.
- Designed specifically for 2-Stroke gasoline engines.
- Includes one complete ignition coil assembly.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Yamaha | 63V-85570-00 |
| Yamaha | 6B4-85570-00 |
Engine & Model Compatibility
Confirm your engine model in the table below. It is crucial to match your engine's specifications to ensure proper fitment.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Yamaha | 9.9FMH | 9.9 | 2-Stroke | 63V-85570-00 |
| Yamaha | 15FMH | 15 | 2-Stroke | 63V-85570-00 |
Technical Specs
- Product Type
- Ignition Coil
- Installation
- Direct Replacement
- Fuel Type
- Gasoline
- Compatible Engines
- For 2-Stroke gasoline engines
- Product Dimensions
- 5.5" L x 4.5" W x 10.0" H
What’s in the Box
- 1 x Ignition Coil Assembly (Replaces 63V-85570-00/6B4-85570-00)
Installation Notes
- Ensure the engine is off and cool, and disconnect the battery.
- Locate the existing ignition coil on the engine.
- Tag and disconnect the spark plug wire and electrical input wires from the old coil.
- Unscrew the mounting bolts and remove the coil.
- Clean the mounting area to ensure a solid connection.
- Position the new ignition coil and secure it with the original bolts.
- Reconnect the electrical input wires and the spark plug wire to the new coil.
- Reconnect the battery and test the engine.
Troubleshooting & FAQ
How do I confirm this coil fits my Yamaha engine?
The best way is to compare your original part number to the ones listed: 63V-85570-00 and 6B4-85570-00. Also, check the compatibility table for your engine model (9.9FMH, 15FMH). Visual comparison with the product images is also recommended.
What are the signs of a failing ignition coil?
Common symptoms include engine misfires, difficulty starting, rough idling, reduced power, and poor fuel economy. A complete failure will result in a no-start condition as there will be no spark.
What is the difference between 63V-85570-00 and 6B4-85570-00?
These part numbers are often interchangeable for certain Yamaha 9.9HP and 15HP 2-stroke models. 63V-85570-00 is a very common reference, and 6B4-85570-00 may be an earlier or alternative part number. This replacement coil is designed to fit applications calling for either part number.
Is this a "charge coil" or an "ignition coil"?
This is an ignition coil (also known as a high-tension coil). Its function is to convert the low voltage from the stator/CDI system into high voltage to create a spark at the spark plug. A charge coil (or pulser coil) is part of the stator assembly that generates the initial electrical energy.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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