Denso Spark Plug 3381 K20HR-U11 OEM specification direct replacement

Denso spark plug 3381 K20HR-U11 uses the same standard electrode material and process as OEM; durability above 90% of OEM life under normal conditions; cost-effective replacement. Part number 3381/K20HR-U11; fits many Denso-equipped vehicles produced since 2000; bore and thread size M14x1.25 identical. Responsible for igniting the air-fuel mixture, stabilizing idle and improving acceleration response; resistance 6 kΩ effectively suppresses EMI. Replacement difficulty medium; use standard offset socket, screw-in length 26.5 mm.