High-Performance Iridium Spark Plug 12120039664 SILZKBR8D8S for BMW
Premium iridium tip ensures ultra-precise ignition, reducing misfires and boosting engine efficiency. Laser-welded construction guarantees durability under extreme temperatures. Optimized electrode design enhances fuel combustion, delivering smoother acceleration and lower emissions. Ideal for BMW models requiring part number 12 12 00 39 664. Precision-engineered ceramic insulator prevents voltage leakage, extending plug lifespan. Perfect for high-performance engines, city commuting, and long-distance driving. Direct OEM replacement with exact fit—no modifications needed. Trusted by mechanics for reliability and consistent power output.