Nissan Spark Plug 22401-5M014 PLFR4A-11 PLFR4G-11, Iridium high ignition efficiency

Nissan Sentra (2000-2010) models X-Trail, Tiida, Sunny and some 1.6L/1.8L variants use iridium spark plugs OEM 22401-5M014 / PLFR4A-11 / PLFR4G-11. Iridium electrode material improves ignition efficiency and life; standard side gap and 26.5mm thread length match OEM specs; resistance 6 kΩ suppresses EMI. Replacement by professional, torque to spec to avoid damaging cylinder head threads or leaks.