Denso Iridium Racing Spark Plug 5749 IKH01-24 - x1 Plug

Denso Iridium Racing Spark Plug 5707 IQ01-24 - x1 Plug

Denso Iridium Power Spark Plug 5345 IKH22 - x1 Plug

Denso Iridium Power Spark Plug 5350 ITL20 x1 Plug for Dodge Challenger 6.4 SRT8

Denso Iridium Racing Spark Plug 5711 IQ02-27 - x1 Plug

Denso Iridium Racing Spark Plug 5712 IQ02-31 - x1 Plug

Denso Iridium Power Spark Plug 5317 IW27 - x1 Plug for Honda NSR 125 SP R

Denso Iridium Racing Spark Plug 5704 IK02-24 - x1 Plug