High-performance NGK BKR5EYA-11 Spark Plug with extended durability for demanding engines. Precision-crafted iridium center electrode ensures consistent spark and optimal combustion efficiency. Triple gasket sealing process prevents gas leakage under extreme temperatures. Ideal for high-mileage vehicles, turbocharged engines, and performance tuning applications. Factory-specified heat range (5) maintains perfect thermal balance in both city driving and highway conditions. Direct replacement for OEM part numbers 98079-5514E with identical dimensions and thread pitch. Copper core construction enhances heat dissipation for prolonged service life. Electrodes feature laser-welded platinum tip for superior corrosion resistance. Compatible with most Asian and European vehicle models requiring BKR5EYA specification. Mass-produced under strict ISO quality standards for guaranteed fitment and reliability.