12x DENSO ZT20EPR11 IRIDIUM SPARK PLUGS FOR ASTON MARTIN DB9 6.0 V12 01.04-10.16
Denso Iridium OE. 0.7mm Ultra-fine Iridium center electrode. Spark plugs should be torqued/tightened down with a dry thread only. Latest Spark Plug technology. Copper core. Simply search 1x, 2x, 3x etc before the spark plug part number.