Mercedes-Benz Original Specification Iridium Spark Plug A0041597503 SILZKFR8D7S Precise Ignition

Mercedes-Benz original-spec iridium spark plugs (OEM: A0041597503, SILZKFR8D7S, and A2701590600) employ iridium electrodes with superior wear resistance and ignition stability versus nickel alloys, leading to slower electrode wear over time. Suitable for Mercedes M274/M270 engines from 2000 onward; uses 6 kΩ resistance to suppress EMI and ensure ignition coil/ECU signal stability. Thread length 26.5mm and M14x1.25 thread spec match OEM exactly; ensures precise ignition performance after installation.