Page 4 of Spark Plugs 2008/2009 by Denso

r ralf schumache m jarno trulli toyota f1 tea the world over gnized technology reco spark plug the evolution of driving high spec 0.4 mm diameter iridium center electrode denso s racing-bred spark plug technology in the world s ultimate motor sports the iridium plug dominates this technology and generates an amazingly high level of response next-generation spark plug that exudes latent engine power with its high-performance spark the world smallest diameter diameter 0.4 mm iridium center electrode iridium plug as of may 2007 superlative performance long life and high response unbeatable spark technology fine-tuned for racing on denso s website you can search for the appropriate spark plug by auto manufacturer or by vehicle name.

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