NGK Racing Spark Plugs R7438-9 Audi RS6 C7 / C7.5

Set of 8 NGK Racing R7438-9 iridium spark plugs with heat range 9, one grade colder than the original specification. Developed for tuned Audi RS6 C7, RS6 C7.5 and RS7 C7 4.0 TFSI engines, they provide excellent heat transfer and stable ignition under demanding conditions.

These direct-fit spark plugs feature Race Iridium technology and triple seals and are suitable for tuned engines from Stage 1 onwards. Engineered in Japan.