1997 Mercedes 600 Coupe & 1995 500 Coupe, 2004 Yamaha R1 200hp 360 pounds
I am going to be replacing all my plugs and I was wondering your opinions on which is the best bosch plug. The one on the right was from the dealer and has a thicker electric tip where the one on the left is also OEM with a thinner tip but I got a lot cheaper from a parts place. Are they the same or what are the differences. Sorry if the pics arent clear I tried to get a better shot of the tips.
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