奔驰克莱斯勒日产丰田三菱火花塞 ZR6SII3320 0242140521，多车适配

ZR6SII3320 spark plug (OEM 0242140521) with iridium electrode material, resistance 6 kΩ, thread size M14x1.25, seat length 26.5 mm, compatible with many post-2000 models from Mercedes-Benz, Chrysler, Nissan, Toyota, and Mitsubishi. Installed in the cylinder head threaded hole, it precisely ignites the air-fuel mixture and is critical for normal engine combustion and power output. Installation difficulty is medium; typical job time about 0.5–1 hour; can address starting problems, rough idle, weak acceleration, or abnormal fuel consumption.