NGK is known to be the world leader when it comes to spark plugs. They have been the makers of spark plugs for virtually every automobile you see on the road including your 1997 Volkswagen Jetta. NGK spark plug is considered to be the window into the engine. However, it is also one of the most ignored components of the engine. Just like any other spark plugs, the F1000-55909 NGK spark plug BKR5E NGK has two primary functions and this is to ignite air/fuel mixture and transfer heat from the combustion chamber. Spark plugs carry electrical energy and convert fuel into working energy. Proper amount of voltage must be provided by the ignition system to spark across the spark plug’s gap. One must also keep in mind that the spark plug’s temperature should be maintained low to avoid pre-ignition but also sufficient enough to prevent fouling. Spark plug components transport thousand of volts to the distributor and other parts of your Volkswagen Jetta’s ignition system. But because spark plugs are carrying thousand of volts, the wire can tear because of the extreme heat and will eventually corrupt the strength of the wire and extremely affect the performance of the spark plug. That is why maintenance and replacements are extremely necessary in order to obtain a pleasurable ride. For your spark plug replacement, always choose the expert and that is F1000-55909 NGK spark plug BKR5E NGK. This way, you will get superior quality and high performance spark plugs. Visit our online catalog now and restore the performance of your Volkswagen Jetta.