
As a spark plug manufacturer with decades of OEM experience, TAKUMI controls every step from electrode material selection to final 100% functional testing.
TAKUMI D7RTC spark plug. TAKUMI D7RTC nickel spark plug matching NGK DPR7EA9.
Every TAKUMI unit is produced in an ISO 9001 and IATF 16949 certified factory, 100% tested before shipment. The plug is engineered for long service life in continuous operation, with a nickel-plated shell, copper-core electrode and high-grade ceramic insulator.
OE numbers are for reference only. Final fitment should be confirmed before ordering.

In our quality laboratory, every production batch is inspected with precision gauges, high-voltage spark testers and sealing equipment before packing.
TAKUMI runs a fully integrated manufacturing base: CNC machining, automated assembly and 100% functional testing under one roof.



From raw material to finished spark plug, every process is controlled in-house with ISO-certified procedures.