2002 F115 Spark Plugs Iridium or not?

[pas_bon]

Is there enough benefit to put Iridium plugs over standard OEM?

 

[Docksidemarineservices]

Does the engine mfg suggest Iridium plugs?

NGK LFR6A-11

 

[pas_bon]

I don't think so. Manual calls for NGK LFR6A-11 Standard Spark Plug. Just wondered if maybe they were better in an irdium version

 

[deepsea21]

I have the same engine and just use the plugs specified. Never had a problem with plugs. Plugs last forever these days and if they fail you have other issues causing them to fail in outboards given their use by recreational boaters. 100,000 miles on a car before plug problems show up? On a boat the plugs should last for years and years.