铱金火花塞 9412 REA9WYPB4 动力提升 品质保证

When your vehicle experiences idle instability, acceleration hesitation, cold-start difficulty, or noticeably higher fuel consumption, the spark plug electrodes are severely worn or carbonized and require replacement. This iridium spark plug provides precise ignition of the air-fuel mixture for smooth power output and improved fuel economy and acceleration response. Suitable for many general models from 2000 onward; OEM number 9412 REA9WYPB4. Use a torque wrench to tighten to the specified torque to avoid over-tightening damaging the cylinder head threads or under-tightening causing leaks; electrode gap does not require adjustment.