What spark plugs are you using in your mercruiser 302's???

aroncornell

aroncornell

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ok guys, next question. Ive been doing some looking and not finding much info on spark plugs other than marine plugs are like $20 a piece and i do not wanna spend that much. I found the NGK AR6fs plug is used in a marine setting and the price is a lot better. So just wondering what you all use in your 5.0 liter???
 
achris

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: What spark plugs are you using in your mercruiser 302's???

Be careful here...

The plugs for your engine are NGK A6FS
For a GM engine they are BR6FS

Chris.......
 
aroncornell

aroncornell

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Re: What spark plugs are you using in your mercruiser 302's???

So is it safe to say I can run the NGK AR6fs in my ford 302???
 
Don S

Don S

Honorary Moderator Emeritus
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62,321
Re: What spark plugs are you using in your mercruiser 302's???

You want the A6FS not the AR6FS your engine does not need the R (Resistor) plug.
 
aroncornell

aroncornell

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Re: What spark plugs are you using in your mercruiser 302's???

gotcha. thanks for the reply
 
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