Iridium is a chemical element that has the atomic number 77. Those benefits also mean that iridium spark plugs are the most expensive ones on the market, often retailing for up to $15 each. It comes with a 700° higher melting point, which means it can offer exceptionally fine electrodes while retaining preferred wear characteristics. Iridium is approximately eight times stronger and six times harder than platinum. You can have an iridium or a platinum tip to optimize the unit’s performance. It also comes with a nickel alloy covering to protect it because the copper has such a low melting point.Ĭonsumers have a choice when selecting the material on the tip of the electrode for the spark plug. This design takes advantage of the excellent conducting rates that copper has with electricity, which is better than any other material type used in this product. Thank you for reading.The majority of spark plugs that operate in vehicles today feature a copper core center electrode. Parts ordered from this website may or may not be in dealer stock at the time of order. Mastertech may make improvements to this site at any time. Changes are periodically added to the information herein. The information, software, products, and services published on this web site may include inaccuracies or typographical errors. This information is disseminated in good faith, however MasterTech assumes NO LIABILITY whatsoever in regard to this service. The information provided on these pages is correct to the best of my knowledge, however the MasterTech makes no warranty, express or implied, regarding the use of, results of, or liability created from, application of this data. Please review our Warranty, Returns & Refunds policies before you place an order. In all VRO-equipped motors, the "Q" type plug is recommended (Designated by "Z" in the plug number for NGK) WHILE LASTING LONGER, SEEM TO HAVE A SLIGHT PERFORMANCE HIT OVER
WE HAVE FOUND THAT THE SURFACE-GAP PLUGS,
WE RECOMMEND NGK INSTEAD, AND TRADITIONAL ELECTRODE-GAP RATHER THAN SURFACE-GAP EVINRUDE/JOHNSON MOTORS SHIP WITH CHAMPION SPARK PLUGS.
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