斯巴鲁森林人力狮火花塞 22401-AA570 双铱铂金PFR5B-11 强劲点火

Subaru Forester (2.0L/2.5L, 2000-2009) and Legacy (2.0L/2.5L, 2000-2010) can opt for OEM numbers 22401-AA570, PFR5B-11 and 2300 double iridium platinum spark plugs. This part uses double iridium platinum electrodes, significantly improving ignition efficiency and combustion stability, reducing carbon buildup and extending life. Replacement difficulty is medium; use a torque wrench to tighten at 25-30 Nm to avoid thread damage from over-tightening. If starting difficulty or idle vibration occurs, electrodes or carbon buildup may be the issue.