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					Originally Posted by clickman  What are the improvements to the coils since the 9x6 came out of the factory?  Why thicker?  Ie why not just go with the original style? | 
	
 
I had only pulled one bank and 2 of 3 were cracked
One had a crack into the body but both had cracking around the bolt hole sections
So the thicker design, I think, would be less prone to that. Otherwise I don't know if there is something electronic going on with the thicker
Also It appears a regular 8mm socket will work on these Torx bolts 
Even though the plugs I pulled looked excellent after 25000 miles, while I'm in there made sense to replace them.