Honda OEM Thermostats & Covers

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Genuine Honda thermostats, thermostat covers and gaskets for BF outboards. The thermostat holds the engine at operating temperature. Stuck closed, it overheats the engine quickly. Stuck open, the engine runs cold, uses more fuel and wears faster. Honda uses different thermostats across its engine families, so order by model.

Frequently asked questions

When should the thermostat be replaced?

Inspect it at the interval in your Honda owner's manual and replace it if it fails a temperature test or shows corrosion or scale.

Can I use a thermostat from another model?

No. Opening temperature and size are specific to the engine family.

Do I need a new gasket?

Yes, whenever the cover comes off.

The engine still overheats. What next?

Check the water pump impeller, then the rest of the cooling system.

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