4x DENSO IK20TT IRIDIUM TT SPARK PLUGS FOR AUDI A4 (8E2, B6) 1.8 T 11.02- 12.04
DENSO’s cutting-edge technology has created a unique iridium rhodium alloy with the highest iridium ratio in the market for the centre electrode, as well as a bespoke platinum alloy for the ground electrode.