4pcs 12120039664 SILZKBR8D8S Spark Plug Compatible with BMW F07 F10 F20 F25 F30 F35

4PCS Professional Spark Plug Set:Meet the simultaneous replacement needs of multi-cylinder engines, suitable for regular maintenance and performance upgrades OE Number 12120039664 Exact Fit: Manufactured in accordance to original factory standards to ensure parameter matching with the corresponding engine ignition system Dual Precious Metal Electrode Design: Uses silicidide iridium material for increased conductivity and optimized ignition stability and energy emission Ceramic insulation layer technology: effectively isolate the circuit, resist high temperature engine room environment, reduce energy loss

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