M-F: 9 - 14 / 16 - 19. S-S: 9 - 19 (uninterrupted).
These provide the ultimate performance for your engine. They’re high-quality, reliable and their advanced materials and design provide superior anti-fouling characteristics, which reduce carbon build-up over a wide heat range. “V Type” plugs include a thin centre electrode tip, which is made of precious metal for added corrosion and oxidation resistance. The result: fast, sure starts and less misfiring, even in the coldest weather.