Świeca zapłonowa G Reddy Iridium Tune L-8 - 13000168 - Japanese Performance and Reliability !Iridium spark plugs, made in Japan by G Reddy & NGK Two grades colder than standard Compatible with : see list below Ideal for sporty and tuned Japanese engines, that have to withstand intensive use (Nissan 350Z, Suzuki Swift Sport...)Thread length : 26.5 mm Total length : 77 mm (exc. electrode)Thread : M14x 1.25Socket size : 16G Reddy part no. : 13000168Sold individually, adjust quantity in the shopping cart G Reddy Iridium Tune L-8 Spark Plug Specifications Made in Japan by G Reddy, these cold spark plugs have been specifically designed to operate at higher temperatures, helping to disperse heat inside the cylinders. This improves combustion, overall performances and engine reliability, reducing the risk of knocking. Particularly adapted to sporty and tuned Japanese engines, they are fully compatible with the following engines : Nissan : VQ35DE (350Z...)VK45DESR20VE, SR20VET Suzuki : M16A (Swift Sport ZC32)