Denso Iridium Racing Spark Plug 5709 IQ01-31 - x1 Plug

Denso Iridium Racing Spark Plug 5752 IRT01-31 - x1 Plug

Denso Iridium Racing Spark Plug 5727 IWM01-31 - x1 Plug

Denso Iridium Racing Spark Plug 5755 IRL01-31 - x1 Plug

Denso Iridium Racing Spark Plug - IRT01-31 - Fits Mazda - OE Quality

Denso Iridium Racing Spark Plug - IU01-34 - Fits Kawasaki - OE Quality

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

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