Which spark plugs are better to choose: NGK or Denso

General description of technical characteristics

The performance characteristics of engine spark plugs include the following parameters:

• Thread diameter;
• Length of the threaded part of the candle;
• Key head size;
• Limit gap between electrodes;

The diameter of car spark plugs has a single value - 14 millimeters.

Thread lengths are divided into three groups:

1. Meek up to 12 mm;
2. Average – 19-20 mm;
3. Long from 25 millimeters and above;

The size of the screw-in spark plug head is 14, 16 and 18 mm.

The gap size between the central and side electrodes is in the range of 0.5-2.0 millimeters.

In addition, the heat number of the spark plugs is of no small importance. It transmits the ability of ignition and combustion of the energy mixture in the engine cylinder

In Russia, its value varies from 8 to 26 and is used depending on the engine power:

• From 11 to 14 – heat number of a hot candle;
• From 20 and above – the number of a cold candle;
• 17-19 – medium candles;
• From 11 to 20 – unified;

Here is a table of the thermal characteristics of the heat rating for different brands from “hot” to “cold”:

The characteristics of candles are indicated by an alphanumeric code specific to a given manufacturer, and is marked on the candle and its packaging.

Rating of the most popular spark plugs

The market for automotive consumables is very saturated and diverse. But well-known brands remain the leaders in the automotive spark plugs section:

1. Bosch;
2. Denso;
3. Beru;
4. NGK;
5. Brisk;
6. Champion;
7. 7700500168;

Moreover, it should be noted that the manufacturer Bosch supplies its spark plugs for Mitsubishi, Peugeot, Audi, Toyota, and Fiat cars. The NGK brand stands on the candles of BMW, Volkswagen, Ford, Ferrari. Audi, Skoda and Opel cars are equipped with spark plugs from Brisk. And the inconspicuous marking 7700500168 is a technical original for Renault cars. The equipment of Jaguar, Volvo, Suzuki or Alfa Romeo is produced by Champion.

By purchasing an original spark plug with a company logo, the consumer receives a high-quality consumable part for his car at a reasonable price. But the choice of manufacturer is rather a secondary factor. The technical characteristics of a particular candle model are much more important.

Thus, DensoW20TT spark plugs are excellent not only for foreign cars, but also for domestic VAZ. Denso KJ16CR-L11 is easily applicable in Kia, Hyundai and Opel cars. Some people choose candles based solely on the manufacturer’s brand; for others, it is the material of the candle that is important, while others also take into account the operating conditions of the machine.

NGK or Denso: which spark plugs are better?

Let's start with the fact that the most important aspect is not the brand, but the correspondence of the spark plugs to the engine type according to a number of important parameters (heat rating, physical dimensions, etc.). Only after deciding that the element is suitable can you proceed to choosing one or another manufacturer.

Also, during the purchasing process, it is important to take into account that there are a large number of counterfeit products and outright fakes on free sale in the CIS, which in some cases are not so easy to distinguish from the original.

The overall condition of the engine and its systems (power supply system, cooling system, ignition system, etc.) has a great influence on the quality of operation and service life of spark plugs. We should not forget about the quality of fuel in a particular region, the possible use of additional additives in gasoline by the car owner himself, the presence of LPG and other individual characteristics.

The best domestic manufacturer of spark plugs

Engels Plant

Rating: 4.4

The first and only place in the rating in the category of Russian spark plug manufacturers is occupied by the Engels Plant, which pursues a policy of creating high-quality analogues of foreign products. The main feature of the company is the cost: it is minimal, and looks favorably against the backdrop of good quality and durability indicators.

Experts do not focus on creating exclusively simple single-electrode candles, relying on multi-electrode models. It is quite difficult to say anything definite about the entire line, since each individual candle sample has a number of distinctive features. For example, T17DVRM is a model with a nickel core and three side contacts, belonging to the Standard class. Provides accurate operation and allows you to save fuel (compared to a single-electrode analogue) by an average of 1.7-2.1%. The plant also stands apart in the development of iridium spark plugs, whose working life sometimes reaches 90-100 thousand kilometers without the slightest complaints about the work. This is the WR7DC+, the peculiarity of which is the presence of a wedge-shaped recess along the length of the entire side electrode to ensure better spark distribution.

In conclusion, it is worth noting that the company actively cooperates with AvtoVAZ, simultaneously supplying products to the retail market, where it is very often purchased for used foreign cars.

Best Multi-Electrode Spark Plugs

Denso K20TXR

These candles are a prime example of how to save money without overpaying for the automaker's logo. In terms of characteristics, design, and appearance, they are no different from models produced to order from automakers. You can safely buy instead of the original - other than saving money, there is no difference.

The model belongs to the budget class - nickel coating. However, several side electrodes provide stable sparking.

Advantages:

• Highest quality workmanship, no manufacturing defects.
• Reasonable price, below platinum. However, there are no differences in quality.
• Good protection against spark erosion.
• High corrosion resistance, after all, nickel coating.
• Wide slots on the nut.
• As for candles without the use of noble metals - a high resource.

Flaws:

• It is inconvenient to adjust the gap - the side electrodes are too strong.
• On liquefied gas the results are mediocre.

Bosch FR7LDC+

Economy class in the line of multi-electrode spark plugs. The cost is significantly lower than the original ones, while the characteristics are practically the same. Yttrium coating. Not platinum, of course, but it increases the resource.

When low-quality fuel gets into the cylinders, the performance deteriorates, causing economy class costs.

Advantages:

• Excellent price, while the resource is not much less than the original.
• When working with high-quality fuel, good efficiency indicators.
• The yttrium coating guarantees high resistance to spark erosion.

Flaws:

• The characteristics strongly depend on the quality of the fuel. Not suitable for use away from approved network gas stations.
• Due to the high popularity of the model, there are a lot of counterfeits on the market. It is quite difficult to distinguish from the real one.

NGK BUR6ET

The candle is not cheap, but the difference in cost with the original is compensated by its outstanding properties. The electrodes are coated with nickel, which guarantees corrosion resistance. Most consumers note stable operation in any speed range. This is also confirmed by professional tests. Candles of this model are always in the top three.

Advantages:

• Three side electrodes guarantee sparking under all conditions.
• They tolerate low quality fuel quite well.
• Good economy, especially under load.
• The increase in power compared to standard spark plugs is more than 4%!
• The resource exceeds the replacement service intervals by a factor of two.

Flaws:

• High price. That's a lot for nickel plating.
• Exhaust toxicity is not the most outstanding.

Brisk Premium LOR15LGS

Original design of the electrode module. Four side electrodes are located below the cut of the central rod. As a result, sparks entangle the central electrode in a web from the insulator to the cut. Ignition reliability increases, spark density is 360⁰.

This is a patented system, there are practically no analogues. Thanks to the dense spark, ignition occurs at the very initial phase of fuel supply. Cost-effectiveness at a high level. Unfortunately, high technology costs a lot of money - this is one of the most expensive candles on the market.

Advantages:

• Complete combustion of the fuel ensures outstanding efficiency.
• Performance does not depend on the quality of the fuel.
• Ecology is at a high level, one of the best indicators.
• Increase in power at high speeds by more than 5%!
• Resource more than 50,000 km.

Flaws:

• The highest cost is for regular candles.
• Low spark stability at low voltage.

Beru Ultra-X 79

The economical price is combined with excellent consumer properties. This candle has contradictory indicators: the manufacturer in its technical specifications indicates incompatibility with LPG, while users, on the contrary, note the high quality of operation on natural gas.

The spark plug has four electrodes, located at different distances from the core. Two electrodes have a gap of 0.8 mm, the rest - 1.2 mm. As a result, an equally stable spark is formed under different operating conditions, even with a heavily smoked insulator. The result is an imitation of a surface discharge in a traditional design.

Advantages:

• The highest efficiency among multi-electrode designs.
• Low exhaust toxicity levels.
• Reliable spark even when the electrodes are heavily soiled.
• Users note a decrease in operating engine noise.
• Stable operation on liquefied gas.

Flaws:

• Low power increase with the throttle valve open - no more than 3.5%!
• It is not possible to set the required clearance to vehicle specifications.

Two-electrode spark plugs: overview of models

Bosch FR7DCX

Made from an alloy of nickel and yttrium, which gives the central electrode greater reliability and longer service life. The combination with yttrium (Y) helps to increase ignition efficiency and reduces fuel consumption during operation. The performance qualities of the candle are high. The distance between the electrodes is 0.9 mm. This model is ideal for cars with a manual transmission and for engines with difficult access to spark plugs.

• Pros of
  the spark plug: durability, spark stability.
• Cons
  : not very clear operation in engines with automatic transmission.
• Conclusion
  : ease of use and a good combination of price and quality.

Bosch WR7DP

Improved design of the central electrode - the core is immersed level in a ceramic electrical insulator. This know-how gives a stable spark even when the voltage in the on-board network is reduced. Material of manufacture: platinum.

• Pros
  : use of domestic brands in cars, ensuring engine power while bypassing fuel consumption, environmentally friendly emissions.
• Cons
  : high price, stable operation only with high-quality fuel.
• Conclusion
  : excellent quality of work with high cost and under certain criteria.

NGK B9Eg-3530

Ensures uninterrupted operation of the engine with any gearbox. The electrode is made of nickel coating and produces a fairly strong contact spark even with low quality fuel. The spark plug holds loads well, does not accumulate carbon deposits and promotes economical oil consumption due to its tight fit into the groove.

• Pros
  : constant spark, saving fuel and oil, working on fuel of different qualities.
• Cons
  : high cost.
• Conclusion
  : candle of optimal quality.

NGK BKR6EIX

High-quality consumables with iridium coating. The electrode gap here is 0.8 mm. This value allows you to get a constant spark even when the battery is maximally discharged. The service life of a spark plug is about 50,000 km, and with high-octane fuel it can increase to 65,000 km. The quality of workmanship and material has active corrosion resistance and erosion resistance.

• Pros
  : availability, long service life.
• Cons
  : high price.
• Conclusion
  : the price is absolutely compensated by the impeccable quality of workmanship and duration of work.

Denso PK20PR-P8

A candle from a Japanese manufacturer, made with platinum coating. Performance characteristics without any complaints. Interelectrode gap 0.8 mm. This type of spark plug is universal and suitable for cars of any model (including those that are no longer in production). When the spark plug reaches high speed, the process of self-cleaning from carbon deposits and impurities begins.

• Pros
  : low price, high-quality threaded connection and reliable ring condensation, long service life.
• Cons
  : formation of carbon deposits at idle, low suitability for cars with gas equipment, the gap is poorly compatible with the requirements for Renault cars.
• Conclusion
  : with a simple design and inexpensive manufacturing material, the result is a product comparable in quality to iridium.

Which spark plugs are better, NGK or Denso and how to distinguish a fake?

Many drivers sometimes face the question of which spark plugs are better than NGK or DENSO and how to distinguish a fake.
This often happens when those installed on the car have already exhausted their service life and require replacement. Retail chains have a large selection of such products, both domestic and imported from well-known companies in the automotive world. Among them, products from NGK and Denso are popular. They are equipped with cars from leading automobile factories, including domestic ones.

Brisk Premium LOR15LGS

The model from Brisk is distinguished by excellent performance indicators and non-standard development. The spark plug has an unusual configuration of side electrodes. Due to the fact that they are made "looking down", the main electrode is surrounded by sparks along the entire length of the open part. Ignition of the fuel-air mixture occurs at the first stage of its entry into the combustion chamber. This contributes to quite noticeable fuel savings.

Advantages:

• high spark density, which is caused by improved electrodes;
• long operational period;
• economical fuel consumption.

Disadvantage: high price.

Which spark plugs are suitable for popular car brands?

To select spark plugs for your car, you must take into account their size and heat rating. Otherwise, it simply will not fit in the intended place. The easiest way is to purchase the same model as before.

When choosing spark plugs for your car, approach it responsibly, since the proper operation of the car depends on them. Consider the car brand, main characteristics and manufacturer rating. In addition, when choosing, focus on financial capabilities.

The choice is always yours. We hope that this article will expand your knowledge about spark plugs for cars and help you make the right choice.

Happy shopping!

Which spark plugs are better to choose: NGK or Denso

Spark plugs are the most important element of any gasoline engine. Their quality directly affects power, efficiency, ease of starting, stability of operation and toxicity of exhaust gases.

Today on the market you can find a fairly large selection of spark plugs from various manufacturers. Recognized leaders among this group of products are products from NGK and Denso.

NGK and Denso products are installed by leading automakers directly on the assembly line; car enthusiasts also give preference to these brands when there is a need to change these elements on the engine. At the same time, many have difficulty choosing, trying to purchase the best product.

Next, we will talk about which spark plugs are better, ngk or denso, we will touch on the topic of iridium spark plugs from these manufacturers, and also take a look at the glow plugs for diesel engines offered by the DENSO and NGK brands.

Read in this article

Spark plug rating

The purpose of creating the TOP is to find the best spark plugs on the market. To do this, reviews from car owners were studied and the opinions of sellers of spare parts stores were taken into account. To eliminate possible technical inconsistencies between the product and its descriptions, consultations were held with auto mechanics.

The winners were selected after analyzing and comparing the following characteristics:

• The central electrode material is copper, platinum or iridium;
• Thread size, length and pitch;
• Heat – cold or hot;
• Wrench head size;
• The number of electrodes and the gap between them;
• Compaction method;
• Resistance;
• The presence of a resistor;
• Resistance to erosion and corrosion processes;
• Versatility and wear resistance;
• Impact on fuel consumption, harmful emissions and the rate of fuel consumption;
• Operational period;
• Weight and dimensions.

During the selection, special attention was paid to the ability to operate uninterruptedly, both under partial load conditions and at maximum engine speed. Also important criteria were value for money and ease of installation

The review features 10 leaders selected from more than 30 applicants. They showed the best results during testing.

Design features of spark plugs

A seemingly simple detail has many nuances. Let's list the main ones:

1. The heat value characterizes the rate of heat transfer from the electrodes to the spark plug skirt. During operation, the spark plug must be heated to such a temperature that the carbon deposits on it oxidize without having time to build up, but overheating is also dangerous for it: glow ignition may occur, and the electrodes themselves will begin to rapidly deteriorate. The problem is that the heat load on the spark plug itself is uneven - when driving at low speeds, the heating is much less than when driving with the pedal to the floor. Candles with a standard heat rating in both of these cases will operate at the extreme point of the optimal mode - under- and overheat, respectively.
2. The spark gap depends primarily on the power of the standard ignition system and the maximum pressure in the cylinder at the end of the compression stroke: it must be such as to ensure reliable spark breakdown even at low voltage in the network (cranking with a starter on a dead battery). And the difference in this case is obvious: usually the transformation coefficient of the ignition coils is about 2000, that is, when the generator is running, they can produce up to 28 kilovolts, but when starting up - only 14! Consequently, the purchased set of spark plugs must have exactly the same gap as set by the car manufacturer: an increased one means the risk of misfire (but within the capabilities of the coil it will provide a more powerful spark that ignites the mixture better), a reduced one guarantees the possibility of starting with a dead battery, but is fraught with interruptions already from - to reduce spark energy.
3. The sticking out of the electrodes also means a lot for the performance of the spark plug in a particular engine. For example, on eight-valve engines, where the spark plug is located on the side of the combustion chamber, increasing the offset optimizes the ignition of the mixture: the area adjacent to the walls of the combustion chamber is less ventilated, while moving the electrodes further ensures that there will be a high-quality, easily ignitable mixture in the spark gap. For VAZ eight-valve engines, where the ventilation of the combustion chamber is structurally deteriorated (the intake and exhaust channels are located in the same direction, and not opposite each other), this is quite sensitive. Spark plugs with electrodes recessed inside are used, as a rule, on multi-valve engines with a minimum volume of the combustion chamber, otherwise they may collide with the valves or piston.
4. The number of electrodes in real operation is fundamentally small. Multi-electrode spark plugs theoretically have an increased service life - when erosion destroys one of the side electrodes, a spark begins to strike the other (unlike a common misconception, a spark does not occur simultaneously between several electrodes). In practice, the spark usually “floats” (which is why it seems that there are several of them) - under conditions of poor distribution of the mixture throughout the cylinder, the spark can move from the working area to the “shaded” area, that is, contaminated with residual exhaust gases. As a result, instead of improving the service life, we will get a deterioration in engine performance, which, again, is fundamental for the VAZ eight-valve engine, which already idles disgustingly with the lean mixture prescribed by current economic standards.

Video: Testing spark plugs on a bench.

Something else useful for you:

• Selection of NGK spark plugs: decoding and marking
• What is the heat number of spark plugs: heat number from different manufacturers
• Replacing spark plugs - frequency and replacement procedure

Non-traditional schemes

Some of the design solutions in spark plugs of an unconventional design can be called conditionally working - by improving one thing, they worsen another. The simplest example is the NGK V-Line series of spark plugs: their central electrode has a groove, so the spark always jumps between the edge of the electrode and the side one. In theory, this improves ignition of the mixture by moving the spark into a better ventilated space and stabilizing the spark point, but the erosion of such a central electrode is accelerated.

Some of the candles on the market cannot be classified as anything other than “Herbalife” from the car market: all sorts of “pre-chamber”, “torch” and so on candles, at best, work no better than standard ones, at worst, they quickly deteriorate. For example, in the notorious “Bugaets” candles, the soldered skirt not only worsened the ventilation of the spark gap, but also burned out, and sometimes went into “free flight” into the combustion chamber. Of the designs that are workable, but useless in the practice of an ordinary motorist, we note only spark plugs that do not have a side electrode at all - they were originally created to work in ultra-high boost engines in order to avoid overheating of the protruding side electrodes; in a normal city cycle on a “civilian” boost level motor, they They clean themselves disgustingly and guarantee rough idling even on ideal quality gasoline.

Electrode material

In how to choose spark plugs it is very important to understand that the main materials that are used in the manufacture of the central electrode are nickel, iridium and platinum

To differentiate between the three different types of spark plugs, note that the nickel electrode will be the thickest, while the platinum and iridium electrodes will be the thinnest. Nickel electrode

Nickel electrode.

By installing spark plugs with such an electrode, you are likely to have problems starting the engine in winter.

Read on the topic: Car won’t start, reasons.

The fact is that such candles are very easy to fill. A drop of fuel easily lingers on a thick electrode and there can be no talk of any sparking.

Iridium spark plugs.

The electrode is thin, which means it’s difficult to fill it in; there’s simply no place for the droplet to stay. A very good option for winter.

Platinum.

The most expensive candles, but also the most reliable. The electrode is thin. Suitable for complex engines, expensive foreign cars, where each replacement of spark plugs is very expensive.

The long period of their work smooths out this high cost.

Candles for contactless ignition.

For contactless ignition on domestic cars, A17DVR spark plugs are used, the operating principle of which is based on creating a spark discharge between the electrodes.

The standard gap between the electrodes in such spark plugs should vary within 0.7 - 0.8 mm.

You can get more detailed information here - VAZ 2109 ignition system.

Counterfeits of Denso and NGK spark plugs: a blow to the manufacturers’ reputation

The great popularity of Denso and NGK brand products, as well as the active demand for spark plugs of these brands, led to the fact that these products began to be counterfeited on a large scale.

If previously a fake could be relatively easily identified by the low quality of the workmanship itself, cheap packaging and tempting price, today non-original candles are becoming more and more common, which are difficult to distinguish from the real product during a quick inspection.

Moreover, unscrupulous sellers often sell such products at a cost that is either not at all different from the original candles, or is only 5-15% lower. Also, small sellers themselves may not know what goods the wholesale supplier delivers to them.

• For this reason, it is important to know that original products are distinguished by high quality printing in relation to packaging. Certain differences can be found on the candles themselves. First of all, you should inspect the electrodes.
• The electrode must be strictly cylindrical in shape and placed in the center. Minor defects, nicks, scratches, etc. are not allowed. Also, original products have a code with a batch number, which is applied to one of the faces.
• At the same time, it is worth paying attention to the contact nut and the quality of the thread. If the contact nut comes off easily, then this also indicates a fake element. Additionally, it is recommended to inspect the insulator.
• The presence of small inclusions, swelling and other defects will indicate that it would be better to refuse to purchase not only this set of candles, but also any other products of this kind from this seller.

What are the features of spark plugs without a resistor?

There are several types of spark plugs, some of which are spark plugs with and without a resistor. Many drivers say that spark plugs with a resistor do not work as harmoniously as without one.

Among the main features of a spark plug without a resistor are the following:

• If the spark plug is without a resistor, then it gives a more powerful spark, which allows you to start the car faster, that is, in fact, there are no noticeable delays.
• If a spark plug does not have a resistor, but its operation is based on electrodes, then the service life of such a spark plug can significantly exceed all replacement periods established by maintenance standards.
• The threaded connection of such a spark plug is much better, so ignition will occur almost instantly.
• If the car moves at high speeds, this means that your spark plug will self-clean perfectly, which will allow you to save not only time, but also money.
• If the spark plug has a high-strength insulator, then cracks will not form on this element, especially if the car has a fairly high mileage.
• If you periodically reset the voltage, the spark plug will still fire, since most spark plugs without a resistor have increased sensitivity.
• Most spark plugs without resistors guarantee that emissions will be environmentally friendly, but it is worth asking the manufacturers about this factor in advance.

If it comes to a spark plug with a resistor, then such plugs may not immediately reproduce ignition in the desired compartment of the car, so your car may start with slight retardation. For this reason, in most cases, more experienced motorists decide to use spark plugs without a resistor.

What's the result?

As domestic practice shows, some drivers claim that NGK spark plugs are better than Denso, and vice versa. At the same time, one cannot exclude the fact that many simply came across a high-quality, but still fake, sold at the price of the original or at a cost close to this indicator. For the same reason, one can also question the widespread claims that NGK has a higher defect rate compared to Denso.

If you use high-quality products from both one and another brand, then, other things being equal, you may not notice the difference. At the same time, we repeat once again that for the engine and the service life of the spark plugs themselves, it is much more important to correctly select a spark plug according to basic parameters, and not according to the manufacturer.

Finally, I would like to note that the optimal solution would be to select from a catalog indicating the make and model of the car. Further purchase of spark plugs is best done from an official dealer, direct representatives of the spark plug manufacturer in your region, or from trusted auto stores or points of sale.

What you need to know when selecting spark plugs according to your car model: size, heat rating, interchangeability. Choosing candles by design, useful tips.

The service life of different types of spark plugs, after what mileage it is recommended to change the spark plugs, signs of a necessary replacement. Useful tips and tricks.

Spark plugs with iridium and platinum electrodes: advantages over conventional spark plugs. Which is better in practice, iridium or platinum spark plugs?

Features and characteristics of NGK spark plugs. How to choose the right candles according to the markings, what is the lifespan of the candles, the differences between the original and the fake, tips.

Signs of faulty spark plugs. Assessing the condition of a spark plug during a visual inspection, methods for checking spark plugs. Plaque on the spark plug electrodes.

Purpose and design of spark plugs for a gasoline engine. Design features, types of spark plugs. Heat number, spark gap.

The unquestioned leader of Bosch

The qualitative rating of leaders, as expected, is headed by the German concern Bosch. Over many years of work on modernizing auto parts, the company managed to create ideal automotive spark plugs. They are the ones that are allowed during assembly at factories of such world-famous car brands as Audi, Peugeot, Fiat, Ford, Toyota, Mitsubishi and others. Bosch spark plugs are manufactured in different series and differ in some characteristics:

• BOSCH Super. The copper central electrode is protected from electrical corrosion and corrosion by a special alloy of chromium and nickel. This combination of metals ensures stable spark formation combined with resistance to wear and sudden temperature changes.
• Super Plus. Spark plugs in this series are produced with a nickel central electrode so that it reliably protects them from corrosion and electrocorrosion thanks to alloying during production.
• Super Plus 4. Four mass electrodes and a central pointed one, the surface of which is treated with silver. Thanks to this innovation, the engine power has increased by 60%.
• The central electrode is made of platinum, which is insulated with ceramics. The unique design guarantees trouble-free engine starting even in extreme cold.

That is why the best Bosch spark plugs are synonymous with unique and impeccable quality, recognized by experts and motorists around the world and received the maximum rating.

Denso products

Denso is also a Japanese manufacturer of components for automobile engines. The company is one of the world's best manufacturers of car accessories. If you carefully study all the features of their products, you will be able to personally find the answer to the question of which spark plugs are better in the NGK or Denso debate. Let's start with the fact that the engineers of this Japanese company used a rather original idea. To produce spark plugs, they began using alumina powders to create an insulator. It first goes through 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. It has become more complex. It is based on a copper alloy 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 further ignition of the air-fuel mixture. In Denso products, insulators can have 5 ribs, which help avoid unnecessary sparking. It follows from this that the voltage loss is reduced. Such an innovation made it possible to improve the quality of the insulating layer by approximately 20 - 25%! Additionally, the developers managed to improve performance characteristics. Candles do their job well even in high humidity conditions.

We recommend: How to check the oil pressure in the engine and what it should be?

The ribs have special roundings. With their help, it was possible to positively influence the strength of insulators. Engineers came up with special sealing gaskets, for the manufacture of which they used glass and copper. This measure helped to increase the insulation characteristics of the central electrodes of the spark plugs and make heat dissipation more efficient. The center electrode has a unique design based on copper cord and a dual chromium-nickel alloy. Iridium alloys, which are used to make central electrodes, are a real source of pride for the Japanese company. The iridium used in Denso will significantly change the concept of reliability and durability of modern spark plugs.

Iridium spark plugs offered by the Japanese manufacturer are aimed at the latest engine models from leading companies. The resource of such elements is over 100 thousand kilometers.

Basic principles for choosing candles

The selection of these spare parts is based on two main parameters - material of manufacture and number of electrodes.

Based on the number of electrodes, spark plugs are divided into:

Single-electrode.

Multielectrode.

Such candles are made with two or more electrodes. The main advantage is durability, since the electrodes fail one at a time. The disadvantage is that it makes it difficult to ignite the fuel.

Spark plugs can be classified according to the material they are made of:

Nickel. The most common, cheapest and simplest type of candle. The main element, the central electrode rod, is made of nickel, which is characterized by high hardenability and temperature resistance. The increased diameter of the electrode reduces the quality of the flash, which is the only drawback.

Platinum. These spark plugs are widely used in motor sports. The electrode here has a smaller diameter (1.1 mm), this gives a strong spark, provoking a large volumetric flash. The resource of such candles is much higher.

Iridium. The most modern and advanced spark plugs. They are characterized by a long service life and a high threshold of heat resistance.

How to choose spark plugs? With iridium or platinum electrodes? They are still arguing which one is better. Let's try to briefly answer this question. If you take into account the characteristics, it will seem that iridium spark plugs are better, but this is not true in all cases.

A common statement is that more modern iridium and platinum spark plugs do not coke or prime correctly. If oil or fuel floods the spark plugs, any spark plugs will flood. Low quality fuel significantly reduces the service life of both types. Finally, manufacturers do not declare the use of iridium spark plugs, so a platinum version of the electrode is perfect.

DataLife Engine – Softnews Media Group

The choice of spark plugs determines how well the engine will run and whether the car will operate smoothly. Therefore, every driver pays special attention to this choice. The main criteria in choosing spark plugs are the manufacturer’s reputation, data from experimental studies of products, price, and positive consumer reviews. No one will buy cheap spark plugs from a Bentley, and buying high-power spark plugs for $30 for just a penny is pointless. Before purchasing spark plugs, car owners usually find out reviews about the brand, because the best characteristic of a product is the result of its practical use.

NGK spark plugs

NGK produces spark plugs, among many other products for automobiles, which are highly technologically advanced and require high-precision manufacturing. The company's product range is a wide range of models, which covers almost all models of modern cars, designed for any type of driving - regular, sporty, extreme, economical. The assortment includes high-power candles with special characteristics. The brand is produced at 11 factories owned by the company in different parts of the world.

Denso spark plugs

The Denso brand has set the pace in spark plug production since 1959. Its developments are highly appreciated by many automakers around the world. Therefore, these candles are often components for conveyor production. Spark plugs are supplied to conveyor production lines of Japanese automakers. There are three main lines of spark plugs - regular, iridium and platinum. Regular spark plugs can be purchased for most vehicles. The presence of refractory elements such as platinum or especially iridium increases the life of the spark plug. The use of iridium alloy in spark plugs can significantly increase their efficiency and service life.

Reviews about candles

As a rule, both brands bring excellent products to the market, the quality of which satisfies the needs of consumers. Both durability and reliability are at a fairly high level. During comparative test tests of candles, it was noted that most of their characteristics were improved compared to other brands. They increase engine power by 6-7% compared to other brands, the reliability of NGK and Denso spark plugs with thin electrodes are confidently leading in terms of performance, and they have a good effect on reducing toxicity. Between these brands, the difference in performance is completely insignificant. Often the only question is whether it is worth overpaying for NGK spark plugs. The NGK brand is more well known and has proven itself, unlike Denso, which is less known, but is not inferior in characteristics to NGK. However, there are many more fakes of a more well-known brand on the market.

What to look for when choosing

As you can see, it generally doesn't matter which candles you choose because both brands provide quality products. However, to avoid any complaints, pay attention to the originality of the product. Because when you buy a fake, you may encounter a level of quality that is different from what you expected. Both brands pack their products in branded boxes. If you purchase spark plugs without a box, the chance of getting a fake increases greatly. The original product from the manufacturer can be ordered on the website https://www.waypartner.ru/. To clarify the features of the purchased product, please call +7(495)762-00-08.

Proper use of candles is an important point

Before we start discussing manufacturers and their mistakes, we want to take a short excursion into the rules for handling car spark plugs. Even the highest quality and most expensive spark plugs will not last more than 25-30 thousand kilometers with full efficiency. The spark plug gives its best performance in the first 8-10 thousand kilometers.

Drivers often change them at this interval in order to achieve the highest quality engine performance. But everything depends not only on the candle. The smooth operation of the electrodes is also influenced by several important factors:

• the quality of gasoline and the appropriate brand of fuel for your engine;
• driving habits, certain characteristics of driving behavior;
• purchasing original or counterfeit candles;
• use of working wires;
• the presence of certain problems in the engine.

All these factors can cause spark plugs to fail. It doesn’t matter what kind of ignition elements you bought and how much money you paid for them. Under unsuitable operating conditions, the electrodes will quickly burn out and the spark plug will no longer perform its duties properly.

How to spot fake Denso spark plugs

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All spark plugs, like any other car part, fail over time. Therefore, most car owners have at least once in their lives been faced with the problem of choosing and purchasing new spark plugs. Their choice is currently very large, there are many brands on the market. One of the most popular is the DENSO brand.

Original candles are of very high quality and can serve for a long time. This can be judged by the reviews of car owners with DENSO spark plugs who used these spare parts at different times. But there is a problem related to the fact that along with original devices there are a lot of counterfeit products on sale, which, to put it mildly, are not of particular quality.

Accordingly, the pressing question is how to distinguish a fake Denso spark plug? Therefore, in order to figure out which is a fake and which is an original spark plug, let’s look at the main differences between them.

About the manufacturers

The following manufacturers have the greatest authority on the world market:

• Bosch;
• NGK:
• Champion;
• Denso;
• Beru Ultra-X Platin.

In the seventies, almost all plugs used a bimetallic center electrode, but the market balance was upset when Champion began producing bimetallic plugs that used a side electrode. The technical performance of these products was significantly better, which was achieved by higher thermoelasticity.

Of course, the list of requirements for candles can be very large, but here we will try to highlight the main ones.