I don't have the part # handy right now, but the one I got is an NGK Iridium plug. You can probably look on their website. I think it's the same number as the stock plug which should be listed in the KLX manual.

 

NGK CR8EIX

Ron

 

I installed the Iridium plug. Backed off the pilot screw (#40) to 2 1/2 turns. And gave the carb a good going over with carb cleaner. I'll take that back, a mild going over. I opened up the drain screw and shot the carb cleaner through both vent hoses on the sides of the carb. My question is, did the carb cleaner go through the jets or only flow into the float bowl? I hope I do not need to remove the carb from the bike again. I got lucky the first time. Put it back together and it actually ran. Now if it will only start reliably.