Product Name: Iridium Power Spark Plug for Subaru Ngk Silfr6a Model NO.: NGK SILFR6A Certification: TS16949, ISO9001: 2000 Ignition Voltage: 17KV Component: Spark Plug Type: Distributorless Ignition System Product Description Product DescripionNGK Performance Spark Plug SILFR6A11. Manufacturer Part Number 5468. NGK OE replacement Platinum or Iridium tipped spark plugs use copper cored plug design tipped with Iridium alloy and/or platinum electrodes for improved performance without compromising service life. Made in China.Additional InformationHex Size16mmTerminal TypeSolidThread Diameter14mmThread Reach26.5mmPart TypePerformance Spark PlugOur Service Tenet - Focus on Clients' requirement ! Product Material and Performance Design Detail (including Color, Craft detail ) Package Design Detail Cooperation Sale Contract including Product detail ,Service Term ,Payment term ect. Offer Real sample before order Fast and Efficiency Provide Service After the Sale (3 month - 2 year) 3 Month - 2 years Perform the treaty of contact