The NGK Racing R7437-9 Competition spark plugs are an essential upgrade for tuned Audi RS6/RS7 C7/C8 4.0 TFSI models. Engineered to be one heat range cooler than stock, these spark plugs offer superior heat dissipation and enhanced spark stability, making them perfect for stage 1 and higher tuning l..

These high-performance NGK Laser Iridium spark plugs are perfectly suited for 4.0 TFSI engines in Audi RS6 and RS7 C7 / C8 models. Matching the OEM heat range, they provide optimal heat dissipation and stable sparking up to stage 2 engines.Designed for easy bolt-on installation Available in a set..

Enhance your tuned Subaru Impreza GT GC8 or WRX/STI 01-05 EJ20 engine performance with these NGK advanced Platinum spark plugs. Engineered to be one heat range cooler than standard, these spark plugs facilitate superior heat dissipation and consistent spark delivery, ideal for stage 1 modifications...