Have the new one on the left, its part number is bkr7e11 and someone suggested i get the one on the right, r5671a. hybrid suggested geting champion #9's but those types are available where i live. what is the part number for a good iridium pliug which pulls the tip out of the chamber like the r5671a? a art number for some good oem or better plug wire would be nice too.
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