Spark Plug 3690 - Iridium IX Plug for American Cars Only

[NGK TR7IX 3690 Spark Plug for US Cars - Iridium IX Plug - Maintenance, Repair, Parts]
・High-performance plug that improves both fuel economy and acceleration.
・Iridium IX plugs are high-performance plugs that achieve faster flame propagation compared to standard plugs and feature a thermo-edge on the insulator tip to improve plug fouling resistance.
Features
・Experience superior driving with your beloved car. The machine roars the moment you press the accelerator! This quick response leads to a new joy in driving!
・Exceptional fuel efficiency. Gentle on your wallet and the environment. Iridium IX plugs offer better ignitability and superior fuel efficiency compared to standard plugs, leading to improved fuel economy!
・Exceptional ignitability with a fine-wire center electrode! NGK Spark Plugs were the first in the world to adopt iridium alloy! Iridium IX plugs are high-performance plugs that offer faster flame propagation and less energy loss (quenching effect) compared to standard plugs.
・Thermo-edge is exclusive to NGK spark plugs! Sustained high performance because it resists fouling! A thermo-edge, where micro-discharges occur, is designed into the insulator tip.
・It burns off carbon that adheres to the insulator during prolonged low-speed driving using micro-discharges, consistently maintaining high ignitability.
・The ultra-fine iridium alloy center electrode improves electric field strength, generating a stronger spark at a lower voltage.
・Since the spark concentrates at the tip of the center electrode, stable combustion is consistently achieved, leading to improved fuel economy.
Specifications
・Part Number: TR7IX
・Stock Number: 3690
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