4.0 TFSI EA824 spark plugs NGK competition

8 special NGK competition spark plugs for all 4.0L TFSI engines such as the RS6 C7, RS7 C7 and many more. These iridium spark plugs have been specially developed for turbo engines with increased boost pressure and high performance. NGK Racing spark plugs with iridium electrode especially for high performance Heat grade 9 Ideal for RS6 and Co These iridium plugs should always be fitted to prevent engine damage at power outputs above 800 hp.