Thread: Improvement Questions.

Originally Posted by IrishNation24

couple quick questions, are these PRJ wires 10.4mm?(ZZ Performance) because it doesnt specify in there description.

Yes, they're 10.4MM. You can go to PRJ's website and he lists the width on there.

Originally Posted by IrishNation24

and what is the diffrence between 103 and 104 spark plugs. what does that number mean?

The number is pretty much just a part number. The difference is heat ranges.