DENSO spark plugs U27ETR (dual ground electrodes). Made in Japan/China. He wants us to use the standard Denso Y27FER-C plugs in the front 2 cylinders and the Denso Y31FER-C in the rears due to them running hotter.
DENSO spark plugs x 4 for the HONDA CBR900 FIREBLADE 1991-1999
4x Denso Spark Plugs for HONDA ST 1100 90->01 Nickel
DENSO spark plugs for the SUZUKI GSXR750 1988-1991 SLINGSHOT
4x Denso Spark Plugs for SUZUKI GSX 1400 01->06 Nickel
NGK Spark Plugs x 4 for BMW R1150GS (R21) (Twin Spark) 2003-2004
NGK LASER IRIDIUM SPARK PLUGS x 4 CR9EIA-9 FOR KAWASAKI Z1000SX MEF-WHF 2014-17
