Mercedes-Benz C230 C250 C300 CL550 Iridium Spark Plug A004159180326 Y7MPP33 Power Upgrade

For Mercedes C230, C250, C300 and CL550 owners, KLP iridium-platinum spark plugs A004159180326/Y7MPP33 use high-melting-point iridium, offering greater anticerosion and longer service life to 80,000–100,000 km. They improve ignition energy, enhance low-speed torque response and high-speed combustion efficiency, and reduce carbon buildup. Installation difficulty medium; requires 14mm socket and torque wrench; operate on a cold vehicle; tightened to 25–30 N·m.