NGK Iridium spark plugs are used in the vast majority of F/I VQ35DE engines in the 2003-2006 Nissan 350z's. They are designed for maximum spark energy, and to hold up to intense heat. The #6 Heat Range plugs are one step colder, which is ideal for turbos and SC's running up to 17 Lbs of boost. The #7 Heat Range plugs are for racing or high boost.
These come pre-gapped for our direct coil over plug ignition system (.040-.044) so they are ready to drop in and go.
The price is for a set of 6 Plugs