I bought some NGK iridium plugs off a seller from ebay trusting his word that these plugs were for my car. I know Ive ran a 7 stage cold plugs on my turbo honda and friends audi so i found it odd that my N/A car would be running these. Would it be okay to run these on my 93 sc300? thanks

 

That's definitely a bit colder than stock specs. I'd just sell those and get the right ones.

 

yea stock specs are 6k. bkr7's is a step colder but usely utilized for turbo apps.


The hotter plug 6k is desinged to burn more of the fuel. But I don't see why it would affect the performance of the car. other then you'll probly burn more fuel.