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Glow Plugs
NGK Glow Plugs are at the forefront of technological innovations. Our glow plugs maintain optimum starting capabilities and offer an excellent post-glow function, promoting clean combustion and
lower toxic emissions. They are manufactured with state of the art techniques with dedication to quality, which leads to outstanding reliability.
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Choose NGK Glow Plugs, and ignite with ease on a frosty start.
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What is a Glow Plug?
Diesel engines, unlike petrol engines which rely on a spark to ignite the air-fuel mixture, function due to the auto-ignition of diesel fuel when subjected to high pressures. Under high pressure, the temperature of the diesel fuel increases to a point where the fuel self-combusts. In cold weather however, this temperature is not always achieved and glow plugs assist by heating the air-fuel mixture to assist in cold starting.
Put simply, glow plugs are small heaters.
Glow Plug Anatomy
Although the glow plug is a familiar engine component, glow plug terminology often varies. The diagrams below identify the major components of metal and ceramic glow plugs and their correct terminology.
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