What brand is NGK spark plug?

[LouisFitz]

NGK spark plug is a Japanese brand and also a world-renowned brand, mainly supplying spark plugs for Japanese vehicles. Below are relevant details: 1. NGK spark plug models: The model numbers of NGK spark plugs are printed on the ceramic insulator of the spark plug skirt, consisting of a series of letters and numbers. The first letter of the most common NGK spark plug model represents the thread diameter of the spark plug. For example, B represents a 14MM thread, C represents a 10MM thread, D represents a 12MM thread, etc. 2. Engine: Using a spark plug model or heat value that does not match the engine may cause unstable engine speed or weak driving performance. When an engine operates at high speed, the number of power bursts per unit time is much higher compared to medium and low speeds. For example, in a V6 engine, if the engine speed is increased to 5000 RPM, the heat generated within a minute becomes very dense, relatively increasing the heat. If a spark plug with an inappropriate heat value is used with this engine, the consequences could be unimaginable.