champion plugs

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jastutte

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when i first bought my 96 discovery it had some champion plugs that were slightly larger than the stock plugs i have in there now. i foolishly threw away the old plugs with out taking down the number stamped on them. i have searched all over the web including champion's site but i can't find anything.

the plugs i pulled out required a larger socket than the stock plugs but that's about all i remember about them.
is anyone else running a champion plug other than the stock?

the plugs i was running originally seemed to give me a little more power and slightly better mpg.

thanks,
 

jastutte

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little clarification. i am now running the RN11YC plugs which has a 14mm thread and 19 mm
reach. the hex size is roughly 20mm. the RN12YC has all the same specs so i'm sure that's not the plug i'm looking for.
 

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