R33 GTS Skyline RB25DE
Twin Cam, Non Turbo
Set of 6 NGK Iridium Spark Plugs- standard heat rating '5'
NGK Iridium technology spark plugs utilise the latest in technology and also laser welding construction techniques. This enables a centre electrode size of just 0.6mm! The smaller the size of the electrode the less voltage is needed to jump the gap- this means more spark energy to ignite the mixture.
These plugs are heat rating5 which is the same as the stock plug. This is good for standard or mildly modified engines.
If you are in any doubt as to what plugs would be suitable for your car, please contact us.