Mitsubishi Lancer EVO 9 IX CT9A
4G63 Single Turbo, Twin Cam 1997cc
Set 4 Uprated Autolite Iridium Spark Plugs
Correct 'Long Reach' Design
America's Best Selling Spark Plug
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 rating 7 which is equivalent to the stock plug. This is good for mildly modified engines and you get the benefit of the ridium technology- better starting, more efficient combustion and increased efficiency. For more highly tuned engines we also stock HKS 8 rated plugs, as well as ultra cold HKS 9 heat rated plugs.
If you are in any doubt as to what plugs would be suitable for your car, please contact us.