Iridium Spark Plug IT20 5326 Multi-vehicle compatible, smooth ignition

This replacement uses iridium electrode; compared with common OEM nickel alloy spark plugs, it increases resistance to burning by about 3x, more stable gap, less carbon buildup over time. OEM number not available; fits post-2000 Chevrolet, Peugeot, Toyota, Mazda, Pontiac, Ford Focus and other models; functions to ensure smooth ignition; resistance 6 kΩ reduces EMI; thread size M14x1.25, seat length 26.5 mm; installation/replacement difficulty: medium; requires special socket and torque wrench; cold-start recommended; tighten at 25–30 Nm.