What brand are the original spark plugs for the new Focus?

1 Answers
JuliannaLee
07/30/25 9:10am
Focus spark plugs use the Japanese brand NGK's iridium spark plugs, model LTR6AI-9. Depending on the vehicle model and batch, the specific model of spark plugs used may vary slightly. Spark plugs are an important component of the gasoline engine ignition system. They introduce high-voltage electricity into the combustion chamber and cause it to jump across the electrode gap to produce a spark, thereby igniting the combustible mixture in the cylinder. They mainly consist of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell. Spark plug replacement cycle: Under normal maintenance conditions, they should be replaced after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine, so it is recommended to follow the user manual. You can refer to the following standards for maintenance replacement: platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers.
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