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  #1  
Old 10-26-2010, 05:57 AM
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Best Spark Plug for 4.7?

Gonna be changing out my serpentine belt with a Gatorback, but I need to know the best spark plug for my WK 4.7. Thanks
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Old 10-26-2010, 06:26 AM
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Re: Best Spark Plug for 4.7?

stock or equivelant copper plug
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Old 10-26-2010, 07:50 AM
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Re: Best Spark Plug for 4.7?

So nothing special like Platinum, Double Platinum, or Iridium?
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Old 10-26-2010, 01:53 PM
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Re: Best Spark Plug for 4.7?

copper champions only, thats oem
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Old 10-26-2010, 02:53 PM
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Re: Best Spark Plug for 4.7?

ok
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Old 10-27-2010, 01:16 PM
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Re: Best Spark Plug for 4.7?

I was told to only use stock copper core. I didnt use OEM, Autozone didnt carry them but I used autolite copper core which are the same thing and it works perfect.
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Old 11-17-2010, 03:40 PM
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Re: Best Spark Plug for 4.7?

if you look on the emissions sticker under the hood it will have a sparkplug number printed on it. Ill tell you this now, if you ever have a drivability concern that is not pointing to any one specific thing and you bring it to the dealer, if you dont have the factory plugs in there expect to be sold a tuneup before further diagnosis. Chrysler engines are really picky about the plugs...
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Old 11-17-2010, 08:10 PM
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Re: Best Spark Plug for 4.7?

NGK Iridiums. That's all I use
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Old 11-19-2010, 02:33 AM
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Re: Best Spark Plug for 4.7?

I always used the stock Champions, but I did try Motorcraft Platinums once. The truck ran well with them.
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