This is a set of 4 NEW NGK spark plugs. This plugs are resistor type with a heat range "8". They are iridium tip plugs. Perfect for your coil on plug setup or for your more aggresive build like boost, nitrous, or very high comp all motor. Part # is BKR8EIX or 2668.
Please check with your tuner if these are suitable for your application before purchasing.