Denso Iridium TT Twin Tip Spark Plug IK20TT X 4Engineered with a 0. 4Mm diameter iridium centre electrode and a 0. 7Mm platinum tipped ground electrode; the iridium tt delivers more complete combustion giving you superior fuel economy and increased power. The DENSO difference: Engineered with the smallest tip in the market, the DENSO Iridium TT spark plug delivers more complete combustion, giving you superior fuel economy over any other plug. The Iridium TT is designed to last beyond 100,000 km.
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