Yamaha OEM Spark Plugs

Spark plugs Yamaha specifies for its outboards. Yamaha lists a particular plug, heat range and gap for each engine family, and using that plug keeps the engine starting and idling the way it should.

Frequently asked questions

Which plug does my Yamaha take?

The plug number is in your owner's manual and in the Yamaha parts diagrams. Send us your model and serial number if you want us to confirm it.

How often should plugs be changed?

Follow the interval in your Yamaha owner's manual, and inspect them at each service.

Should I check the gap?

Yes, against the gap in your owner's manual, before fitting.

What about coils?

See Yamaha ignition coils and Yamaha electrical and ignition parts.

See spark plugs for all brands. Boat Max Online is an authorized Yamaha dealer. Free shipping on orders over $149 to the lower 48 states.