Help on NGK spark plug

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01-23-2007, 05:39 PM

BOOSTED RIVAL

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Help on NGK spark plug

Is the spark plug part number 2975 ZFR7F-11 step colder then stock. and if it is how much colder. Thanks for your time.

I did a search on it but didn't get what I aspected.

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01-23-2007, 05:42 PM

Blueprint

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Re: Help on NGK spark plug (BOOSTED RIVAL)

it is 2 steps colder. stock is a 5 and 6 is cold and 7 is colder so its 2 steps

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01-23-2007, 05:44 PM

BOOSTED RIVAL

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Re: Help on NGK spark plug (Blueprint)

Thank You that what I want to hear

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