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Each car is equipped with a large number of elements that are subject to mandatory periodic replacement. All these consumables directly affect the performance, reliability, efficiency and durability of different systems and components. One of the main components are spark plugs. With their failure, the car simply ceases to be a vehicle. Therefore, it is important for the car owner to monitor the condition of the candles and change them in time. Only consumables can vary significantly in quality. There are cheap candles that can work out the minimum period of time and deliver a lot of trouble to the driver. But there is a category of high-quality products that definitely include products of such brands as Denso and NGK. These are two market leaders who actively oppose each other in the spark plug segment. Therefore, car owners themselves have a logical question about which of the candles is better - Denso or NGK. It should be answered in detail and determine whether there is a pronounced leader in this dispute.

Comparison of spark plugs NGK and Denso.

Читать далее про то какие свечи лучше выбрать: NGK или Denso-->

Candles NGK

NLC and Denso are not only competitors, but also two objective market leaders. It is not surprising that their candles are used as factory components in the production of cars in Europe, Japan, Russia, etc. But it is difficult to unequivocally answer the question of which candles are better. First you need to learn the nuances of products NGK and Denso. The first in our turn candles, manufactured under the brand NGK. This is a Japanese company that manufactures a wide range of products used as a factory set of automobile engines from different automakers. These include spark plugs.

NGK V-Line is in great demand in the market. Such candles are not only used as factory equipment of engines, but also bought during the period of the need to replace this consumable item. Candles are focused on work in conditions of highly depleted fuel mixture. This allows you to more effectively ignite it inside the cylinders of the power plant. The advantages of NGK candles include their high degree of reliability, excellent performance in various operating conditions and the ability to interact with different types of fuel.

In the case of spark plugs, it is difficult to develop something new. These products have practically reached the peak of their perfection. Therefore, the main efforts of the NGK manufacturer are aimed at finding new directions in the design of its own products. Now the Japanese company makes extensive use of modern technologies and new developments that increase the efficiency of their candles and allow them to stay ahead of their main competitors. In total, there are 7 types of spark plugs available in the NGK range. All of them possess a certain set of properties, qualities and characteristics. The most significant of them are products that have three electrodes. This is a special development for the German automaker Volkswagen.

In the case of conventional products, where only one electrode is used, the developers decided to use a notch that looks like the letter V. A similar innovation on the central electrodes of the candles increased the ignition quality of the fuel vapor. It is safe to say that NGK offers a decent assortment at fairly reasonable prices. Identifying the weaknesses of the manufacturer is difficult. Yes, you can easily find alternative solutions at a more affordable price. But the question of quality, efficiency and efficiency is in the first place. In this component, the only worthy competitor for NGK is Denso.

Denso products

Denso is also a Japanese automotive engine component manufacturer. The company is one of the world's best manufacturers of accessories for machines. If you carefully study all the features of their products, you can personally find the answer to the question of which candles are still better in the NGK or Denso dispute. To begin with, the engineers of this Japanese company applied a rather original idea. For the production of spark plugs, they began to use alumina powders to create an insulator. Previously, it undergoes a highly efficient cleaning cycle. Thanks to this approach, Denso has developed a unique high-strength insulator with excellent thermal conductivity.

Also, major changes were made to the design of the central electrode. She became more complex. The basis is an alloy of copper with the addition of chromium-nickel components. Most electrodes are made with a U-shaped notch. Using this method, it was possible to obtain additional space for the formation of a spark and the further ignition of the air-fuel mixture. In Denso products, insulators may have 5 edges each, which allow to avoid unnecessary sparking. From this it follows that the loss in voltage decreases. Such an innovation has improved the quality of the insulation layer by about 20–25%. Additionally, developers were able to improve performance. Candles do a good job even in high humidity conditions.

The ribs have special curves. With their help, it was possible to positively affect the strength of the insulators. Engineers invented special sealing gaskets, for the manufacture of which used glass and copper. This measure helped to increase the insulating characteristics of the central electrodes of the spark plugs and to make the heat removal more efficient. A unique design is provided for the central electrode, which is based on a copper cord and a double alloy based on chromium and nickel. Iridium alloys, which are used for the manufacture of central electrodes, are a real pride of the Japanese company. Iridium, used in Denso, will significantly change the concept of reliability and durability of modern spark plugs.

Iridium candles offered by the Japanese manufacturer, focused on the latest engine models of leading companies. The resource of such elements is over 100 thousand kilometers.

What to choose

No analytical comparisons will give a more objective answer than the opinion of car owners. And reviews clearly show that there is no obvious leader among these two manufacturers of spark plugs. Some believe that the best are candles from Denso. Others are confident of the undisputed advantage of the domination of NGK products. Far from the last role in shaping the opinion of a large percentage of the audience is played by counterfeit products. Candles fakes of both brands on the market very much, which makes an impressive contribution to the reputation of Japanese manufacturers.

Often motorists form their opinion about the original products, actually buying a fake. We do not hide the fact that the current fakes Denso and NGK can be of sufficient quality, which is why the situation around the definition of a leader becomes completely confusing. But experts make the right point. You can not compare the two companies that produce high-quality components for cars. Both options can satisfy even the most demanding customer. Therefore, the best solution is not to choose between brands, but according to the basic parameters of your engine.

Let's just say easier. If you put candles on your power unit that do not meet the requirements of the automaker, you will not be able to get away from their quick failure. It does not matter if you buy candles from Denso or NGK. Focus on the features of the motor, its parameters. If you have doubts about the correctness of your choice, contact an authorized dealer and certified representatives of these companies from Japan for help.

The problem of fakes

This issue should not be ignored, since it significantly and in a negative context affects the reputation of the two leading manufacturers of spark plugs and other components for automotive engines. Each of you is well aware that such a huge popularity of products from the companies NGK and Denso could not leave aside all sorts of scammers and fans to make money on someone else's success. Therefore, when certain people realized that the demand for candles from these firms was growing rapidly, consumers were happy to buy such products, they started large-scale production of counterfeit products.

Initially, in the manufacture of fakes scammers did not particularly bother. Therefore, it was easy to identify them by several characteristic features:

• low quality of manufacture of the candles themselves;
• cheap packaging;
• too low in comparison with the original price;
• implementation in natural markets without certificates and other accompanying documents.

Now the scammers have become more sophisticated. Therefore, some fakes during a cursory inspection of the package and its contents are extremely difficult to distinguish from the original products. Some went even further. In order to dispel suspicions of selling fakes, they raised price tags to the level of original candles, or approached it as close as possible. It is not always necessary to blame the implementers themselves. Small shops themselves usually do not know where they are supplied with certain goods. They are sure that they are selling original spark plugs, although in fact there is just a well-disguised fake in front of you.

In order not to fall prey to unscrupulous manufacturers who are trying to make money at your expense and at the expense of the success of Denso and NGK companies, it is recommended to explore several characteristic features of genuine spark plugs and their fakes.

1. Packaging. No matter how expensive the printing equipment of the fraudsters, the original packaging is always characterized by a higher quality image and inscription. So start by studying the spark plug shell. The package should not contain traces of paint smudges, uneven font, illegible letters or smeared images. All neat, clear and high quality. If the printing is in doubt, you can not even open the package. It is better to look for products of Japanese manufacturers of spark plugs in other stores.
2. Electrode. The presence of well-executed packaging does not guarantee the authenticity of products. Therefore open the box and look at the candles themselves. You should be interested in the electrode. It always has a strictly cylindrical shape and is located exactly in the middle. Any deviations and defects indicate that there is a fake.
3. Batch number code. Take a look at the edges of the spark plugs. On one of them, manufacturers must put a special code, which means the batch number. Its absence, indistinctness, smearing speak of a high probability of a fake. It is better to refuse such candles and look for them in another place.
4. Contact nut. Another important component by which you can identify a fake. Look at the thread and how well it is executed. If you can easily remove the contact nut, then before you just a fake. Using such spark plugs is potentially dangerous. You at least after a short time have to buy a new set of candles.
5. Insulator. A good way to identify counterfeit products is an external inspection of the insulator. Look carefully if there are any blotches, traces of bloating or other defects. If something like this was discovered, these are definitely not real NGK and Denso candles. From such a seller is better not to buy anything.
6. Performance Some motorists do not pay enough attention to the choice of original components. Therefore, the authenticity of candles is often verified by an experimental method. After replacing the old spark plugs with new ones, you can observe changes in the operation of the engine, the quality of ignition of the fuel mixture, the functioning of the ignition system. If everything is normal and the car behaves well for a long period, you managed to buy good genuine candles. But there are situations when elements cease to function normally after a short mileage. There is no other way out except to dismantle the device and again go in search of original products.

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In fairness it should be noted that some fakes are not much inferior in quality and characteristics of this candle Japanese manufacturers. But a natural question arises about why they do not want to start producing their own product line under a new brand. Apparently, due to a good marketing campaign of Denso and NGK, it is much easier to sell your product than to open a company and start everything from scratch.

As you understand, it is difficult to choose between Denso and NGK. Both companies produce high quality products. Therefore, all motorists are recommended not to focus on the brand, but on the characteristics and requirements of the automaker, which it makes regarding the choice of components for the engine installed on the car. Also, do not forget to choose the spark plugs more carefully, because, due to the large number of counterfeit products, not everyone can always find genuine parts from NGK and Denso.