NGK Iridium IX BKR6EIX

NGK's Iridium IX plug uses a 0.6 mm iridium centre electrode for a sharper spark kernel and reduced electrode erosion over 100,000 km service intervals. The BKR6EIX is the replacement specification for the Subaru EJ20/EJ257 and Mitsubishi 4G63T turbocharged engines. The same plug spec crosses both brands because of broadly similar boost pressures and combustion chamber geometries.