Yamaha F9.9-F25 Outboard Ignition Coil Assembly - 6F5-85570-13-00
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The Yamaha 6F5-85570-13-00 is a genuine Yamaha OEM ignition coil assembly used on select Yamaha outboard ignition systems where the factory Electrical 1 parts diagram calls for this coil. The ignition coil converts low-voltage input from the ignition system into the high-voltage output needed to fire the spark plug and support proper combustion.
This current coil assembly replaces earlier Yamaha coil references 6F5-85570-10, 6F5-85570-11, and 6F5-85570-12 in applications where Yamaha specifies the updated 6F5-85570-13-00 service part.
Key Features
- Genuine Yamaha OEM ignition coil assembly.
- Yamaha part number: 6F5-85570-13-00.
- Alternate formatting: 6F5-85570-13 and 6F5855701300.
- Cataloged in Yamaha Electrical 1 ignition system diagrams where specified.
- Replaces earlier Yamaha ignition coil references in supported applications.
- Listed weight reference: 0.416 lb.
- Provides high-voltage spark output to the spark plug lead/boot circuit.
- Used for spark-loss, weak-spark, misfire, and heat-related ignition diagnosis where the coil tests outside specification.
Engine Compatibility
Common application context includes select Yamaha 2-stroke and 4-stroke outboards by model, serial number, ignition layout, and Electrical 1 diagram, including:
- Select Yamaha F9.9 FourStroke applications where specified.
- Select Yamaha F13.5 FourStroke applications where specified.
- Select Yamaha F15 FourStroke applications where specified.
- Select Yamaha F20 FourStroke applications where specified.
- Select Yamaha F25 FourStroke applications where specified.
- Select Yamaha 15 HP, 25 HP, 40 HP, and K40 2-stroke applications where the Yamaha parts diagram calls for this coil.
Use this ignition coil only where the Yamaha parts diagram specifically calls for 6F5-85570-13-00 or a supported earlier reference.
Serial Number Fitment Notice
Confirm fitment by Yamaha model code, serial number, horsepower, ignition system layout, coil mounting style, spark plug lead arrangement, and the exact Electrical 1 factory parts diagram before ordering. Yamaha used different coils, CDI units, charge coils, pulser coils, plug caps, and harness connections across similar horsepower ranges, so horsepower alone is not enough to confirm fitment.
When This Part Needs Replacement
Replace this ignition coil if it fails resistance testing, produces weak or intermittent spark, loses spark when hot, has cracked insulation, damaged plug lead output, corroded terminals, moisture intrusion, or visible arcing. It should also be inspected when diagnosing a single-cylinder misfire, hard starting, poor idle, rough running, or complete no-spark condition.
Installation Notes
Test the original coil before replacement using the Yamaha service manual resistance specifications for the exact engine model. Check both the primary and secondary circuits with a digital multimeter. Clean the coil mounting surface and ground contact area before installation, since poor grounding can cause weak or inconsistent spark even with a new coil installed.
Inspect the spark plug cap, plug wire/lead, spark plug, kill-switch circuit, CDI output, wiring connectors, and engine ground while diagnosing the ignition system. Apply dielectric grease only where appropriate around the boot area to help seal out moisture; do not coat the metal electrical contact surface in a way that prevents proper connection.
Alternate/Superseded Part Numbers
- 6F5-85570-13-00 — current Yamaha OEM part number
- 6F5-85570-13 — alternate catalog formatting
- 6F5855701300 — condensed catalog formatting
- 6F5-85570-10-00 — earlier Yamaha reference; verify by model and diagram
- 6F5-85570-11-00 — earlier Yamaha reference; verify by model and diagram
- 6F5-85570-12-00 — earlier Yamaha reference; verify by model and diagram
Parts Desk Insight
Ignition coils should be diagnosed before replacement because weak spark can also be caused by a failing CDI, poor ground, corroded connector, damaged plug cap, incorrect spark plug, or safety-stop circuit issue. On Yamaha outboards, matching the coil by the Electrical 1 diagram and serial number helps avoid installing a similar-looking coil with the wrong mounting, lead, or connector configuration.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
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Important:
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