Hey guys, I just wanted to confirm that I'll be installed the right plugs.

I was looking to pickup a set of plugs a little colder than the TR-6. I was told the TR-7 is the next colder plug. The store was out of these, but the had the Autolite 103's, which they told me was the same heat range as the NGK TR-7.

So, before I install the plugs - can anyone confirm - is the Augolite 103 1 heat range colder than the NGK TR6 ???

 

yes the 104 is the same as the tr6,103 is a step colder.

 

Thanks