Nic Posted March 11, 2002 Share Posted March 11, 2002 I am going to fit some new HKS Iridium plugs as I'm getting missing at high boost (1.3bar.) HKS specify three options for the Supra 35,40 & 45, does anyone know which is the cooler spec of the three? cheers Link to comment Share on other sites More sharing options...
Alex Posted March 11, 2002 Share Posted March 11, 2002 Nic, Please don't waste your money...get the NGK plugs they are exactly the same and about £70 cheaper....you really are paying for the name with the HKS ones. Though I can't remember which code the grade 9 and 10 plugs are...search for NGK on this site and you'll find them. Link to comment Share on other sites More sharing options...
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