I just got my plugs from summit, they are NGK-TR55GP. I have heard of TR55's, TR-6, and the iridiums(or what ever they are called). Did they send me the wrong ones? Or are they Good to use? They are platinum. Thanks for the help.

 

ttt

 

Isn't the "GP" simply the platinum version of the plug?

 

If the box's have 3951 on them (part #) then they are the right one's.

EDIT: these are the coppers

 

GP=G-Power, just another version of their plat plugs.

 

Thanks guys, I just didn't want to mess up the engine the first time it was started in 8 months.