KLP 铱金火花塞 41-121 55585517 别克昂科拉雅特赛飞利欧宝

When your Buick Encore, Vauxhall/Opel, or Sefily experiences idle instability, acceleration weakness, cold-start difficulty, or higher fuel consumption, the ignition plug electrodes are worn or heavily carboned, causing insufficient ignition energy and poor combustion. This KLP iridium spark plug provides stable, strong ignition to restore engine power and reduce emissions. OEM number: 55585517 (corresponds to 41-121); compatible with post-2000 Buick Encore, Opel/Vauxhall, Sefily, and Myrina models. Install with torque wrench to the recommended torque (about 25-30 Nm); ensure spark plug gap matches engine specifications; avoid over-tightening or under-tightening that could cause leaks or thread damage.