I believe they are the tr55's. As for brands of spark plugs, I would go with autolite for a stockish car. I've run them in many different cars and they work great. If you want the fancy "platinums", they are fine too. I wouldn't run bosch plats, I've run them before and they are ok, but they idle like SHYT and don't last long!!

 

I've got Autolite Iridiums...
Least I think they're autolites...
I know they're iridium...
A buddy gave em to me...
I put em in a LONG time ago...
Run fine...
But don't expect any hp gains or anything from spark plugs...
They might prevent loss...
But won't add anything...
Back when i was a noob I had synthetic oil and racing plugs listed as a mod...

I learned the hard way (i.e. bein flamed like hell via this forum) that they don't really do anything...
lol

-Coop

 

I have e3s and they been doing fine anyone else have them what do you think of them i never really paid attention to them but they do run well. Anyone else have theM?

 

+1 Bosch is complete crap. My 5.0 came with a Bosch alternator and well, needless to say, it's been replaced with a Powermaster alternator because the damn thing crapped out two months ago.[:'(]

 

This just reminds me, i need to change my spark plugs.