Mercury / Mariner Spark Plugs x 4

These are the correct spark plugs for the following four stoke models:

40HP EFI 4 cylinder models (will NOT fit carb models)

50HP EFI 4 cylinder models (will NOT fit carb models)

60HP EFI 4 cylinder models (will NOT fit carb models)

If you have any doubts whether these will fit your outboard, please email your model and serial number.

Please note: The spark plug box may be red due to the manufacturer changing the packaging colours.

Thank you for looking.