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This heat range is a direct replacement for Mistubishi’s oem plug.
Suitable for engine’s upto 450HP
This heat range is a cooler running plug than the 7 heat range plug and can be used as a fast road/ track plug.
Suitable for engine’s upto 500HP
This heat range is a cold running plug and can be used for road or track in big HP cars, will also suit lower powerd cars that are used on track a lot.
Suitable for engine’s over 500HP
NGK ILFR7H spark plugs
Direct replacement plug for the Evo 9
We have used these plugs in 550HP engines with good results
We have ran these belts on race engines upto 700HP with zero faliures
These are quite a common faliure causing running issues and engine warning lights
Will fit Evo 4 with a small wiring modification
All prices include VAT.