Selection of Denso spark plugs by car brand. Denso spark plugs - selection by car What do the letters on denso spark plugs mean

The correct selection of spark plugs will help the driver avoid problems with the engine: improve the efficiency of the internal combustion engine and reduce fuel consumption. The technical condition of the engine of your vehicle can also be determined by the appearance of the device: clean electrodes and a light gray or brown color of the skirt indicate that the engine is in good condition, and the appearance of carbon deposits on the central electrode of the product will be the result of too much gasoline consumption.

Rules for selecting spark plugs for a car

The devices necessary for the smooth functioning of the engine will serve you and your car for a long time, if you pay attention not only to the distinctive structure, materials of production, but also to the compliance with the parameters of the car engine. Also, each type and subtype of products must correspond to the brand of the car. When selecting candles according to the brand of car, the main factor will be the glow number - the period of time after which the product reaches glow ignition. A heat number having a higher value means that the product heats up in a shorter period. Thus, such a device would be considered "cold". A "hot" candle will accordingly have a lower glow number.

Remember! Spark plugs fitted to the wrong type of engine can cause increased fuel consumption or engine damage.

Choosing a Spark Plug Manufacturer

Among the many manufacturers of spark plugs, Denso can be distinguished, which has been producing these products for cars since 1959. The product line is diverse: standard, iridium, platinum, TT.

Denso spark plugs

Looking for Denso spark plugs? Selection by car, engine characteristics will help to select the right option, for this you need to know:

• thermal cone size;
• the vehicle manual must indicate the characteristics of the product corresponding to the engine;
• if possible, the combustion device is unscrewed from the internal combustion engine, observing safety precautions. On the case there is a marking by which you can choose an analogue. This option is ideal if you are sure that the device that needs to be replaced exactly fits your car.

Among the key devices of the car, the most modern can be distinguished - Denso iridium candles. There are a number of advantages of this type of product:

• extended service life (3 times longer);
• reduced fuel consumption;
• reduction of exhaust emissions;
• increase in engine power and its service life;
• less sensitive to the quality of gasoline;
• more frost resistant.

As well as other iridium candles, they are selected according to the make of the car, model and year of manufacture. Also, this type of product is more suitable for modern machines, the design of which allows you to more fully reveal the advantages of the device.

In the selection of products, you can contact the official manufacturer: the Denso website contains an electronic catalog of products of various types. Also, for each type of product, a video installation instruction has been added, a notation system, features and benefits are indicated. Denso offers to choose products by make, year of manufacture of the vehicle or by part number.

Reliable and timely ignition of the air-fuel mixture in the cylinders is one of the decisive factors that ensure the operation of the engine. This process is initiated by a spark resulting from an electrical breakdown of the air gap between the contacts of the spark plug. The flow of this process is largely determined by the parameters of the specified node and the system as a whole.

The engineering company DENSO is part of the Toyota Group and is one of the largest manufacturers of high-quality. Among other products manufactured by the company, there is an extensive range of spark plugs for gasoline engines with different parameters. These components are of high quality materials and workmanship.

The spark plug is a complex device consisting of the following parts:

• contact output with a tip;
• an insulator with ribs along the open part;
• plinth with sealing washer;
• center and side electrodes.

The efficiency of this unit is largely determined by the features of its design and the physicochemical properties of the materials used. The working parts of the spark plug are exposed to high temperature and pressure in the engine cylinders. In the manufacture of electrodes at the company's enterprises, special steel grades with alloying additions of nickel and manganese are used.

In addition, the company produces a number of promising models of candles with soldering from platinum group metals. Such products have a high cost, which pays off with their durability and stability of parameters.

Video - how DENSO TT spark plugs differ from conventional spark plugs:

The company produces a wide range of candles for almost everyone. On the packaging of each product indicates a list of brands of machines for which they are intended.

The technical documentation of the car also indicates a list of components recommended by manufacturers. In most cases, car owners rarely choose candles for their vehicle on their own, relying entirely on sales consultants. The latter often offer not what the buyer needs, but what needs to be sold.

The selection of DENSO spark plugs for a car can also be done independently, for which the company has created a special service on the official website of the dealer. This application allows you to reduce this process to a minimum, it is enough to have a computer or mobile device with Internet access at hand.

The network has pages of other companies of a similar purpose that compete with the official website of the manufacturer.

Online services that allow you to select DENSO spark plugs by car make

The range of components of this type is extensive and varied. The production policy of the company is such that several types of spark plugs can be produced for the same engine, differing in design or materials used.

Examples include single- and multi-contact products, as well as components with iridium or platinum brazing. A special place in the nomenclature is occupied by plasma-prechamber candles with an annular coaxial gap between the central and side electrodes. All listed products will work properly on power units of the same model.

Proper selection of DENSO spark plugs by vehicle brand in such conditions requires a good knowledge of the entire range of components for this brand. The presence of a special service on the manufacturer's website allows you to perform this operation much faster.

Consider the advantages and disadvantages of online services designed to select candles from a given manufacturer by car brand.

It is logical to start from the portal of the official dealer of the Japanese company DENSO (LINK). On the main page there is a list of sections, we need to go to the electronic catalog, which has two main search forms.

The first allows you to select DENSO spark plugs by car brand, and the second is designed before searching by article number or other data.

The procedure for selecting the required type of components is organized as follows:

1. The "Select products" window displays a list of products manufactured by this company. We click on the desired line and proceed sequentially to the choice of the automaker, car brand and engine model, as well as the year of manufacture.
2. Below the field of search forms, a table appears indicating the code of the power unit of the period of its release, which will correspond to three types of candles of different designs. The last item indicates the required number of components according to the number of cylinders.

The main advantage of this site is the ease of design, where the motorist is not distracted by annoying advertising or other extraneous irritants. The disadvantages include the inability to place an order for the necessary spark plugs. In fact, the user receives only information about the candles he needs, after which he is forced to search for them in order to buy in online stores or regular auto parts stores.

You can also use the website of the company "Spare Parts South of the Russian Federation" (LINK), which offers to purchase components in Stavropol.

The selection of DENSO spark plugs by car brand is organized here according to a very convenient scheme. The search page is in alphabetical order, and clicking on the link gives the results in the form of a table.

Here, as in the first case, all three possible variants of candles for a given car model are given.

The web page interface is to be commended, with a very handy full list of companies. Such a scheme makes it possible to quickly select the desired company and go directly to the table with ready-made data for all models of machines of this manufacturer.

A somewhat complicated ordering process for spark plugs somewhat spoils the overall impression.

The Moscow company "Bilight" (LINK) also helps to select DENSO spark plugs for the car. The execution of the operation on this site is largely the same as the previous one.

There is also a list of car manufacturers. On the next page is an extensive table with search results for all models of this manufacturer, indicating all possible candle options.

In order for the fuel to burn correctly and fully in the engine, it is required to use an appropriate ignition source in the system. If we talk about engines that run on gasoline, then such a source is a spark plug. It is intended to ignite the fuel mixture by means of a discharge. It is important to responsibly approach the choice of candles, since the performance and service life of the motor depend on it. Our experts will always help with the right choice of candles.

Types of spark plugs

Spark plugs have been used in car construction for many decades. At the same time, they are continuously improved by manufacturers. For each type of engine, there are corresponding types of spark plugs:

1. For gasoline devices, spark devices are used.
2. For gas turbines, a surface discharge product is intended.
3. For turbojet manufacturers offer arc.
4. For a diesel engine, a carburetor engine, for those used in ship and aviation business, glow plugs are intended.

Spark plugs are the most popular, since they are suitable for gasoline units. They are necessary in order for the fuel in the cylinder to ignite. In turn, spark products are subdivided according to the type and number of electric conductors:

• with one electrode;
• with a large number of electrodes;
• torch;
• plasma prechamber.

What is a heat number?

The glow number is an indicator that the spark plug is capable of providing timely ignition and combustion of the fuel. Practice shows that if the candle does not heat up enough, then its service life is significantly reduced due to the formation of soot. In this case, the fuel cannot burn completely. There are also cases when the products are too hot, and then ignition can occur suddenly, not only from the incoming charge. Because of this, the motorist may experience burnout of the valves, their deformation. If we consider this parameter, then it is worth highlighting the varieties of products according to the magnitude of the glow number:

1. Hot, their value is from 11 to 14, this option is considered ideal for motors with a small afterburner.
2. The averages are from 17 to 19.
3. Cold equates to 20, intended for powerful motors.
4. There are also unified ones, their value varies from 11 to 20. They have a characteristic difference - such candles have a semi-open structure. Due to this design feature, the product does not clog.

What else to pay attention to?

Among the characteristics of products, their dimensions are noted, which must be taken into account when choosing. It is important to understand what size product is in the motor. If we talk about dimensions, then it is necessary to take into account such parameters as the metric thread on the body, the length of the threaded part, the size of the hexagon head. The gap between the electrodes of the candle also matters. Manufacturers set their own gap sizes, they depend on the technology of creation and the materials used.

The material also matters. So, alloy steel is used to create side electrodes. Such candles are distinguished by a long service life and quality. In most cases, nickel or copper is used to create the central electrodes. The use of these materials provides the ability to prevent carbon deposits, various pollution, and has a positive effect on the service life.

What candles to choose?

You need to be extremely careful when choosing, the operation of the car engine depends on it. The best solution is to trust the technical recommendations of the machine manufacturer. In the transport passport or instructions for use, you can find the appropriate recommendations. The manufacturer usually tells in detail which spark plugs are suitable for the car. So that motorists can easily select products, each has its own marking. For clarity, it is worth considering a standard marking example. We take a product marked AU17DVRM and try to figure out the meaning of its code.

• A - thread on the body M14x1.25 mm
• U - head size for hexagon 16 mm
• 17 - glow number
• D - length of the threaded part 19 mm
• B - the thermal cone of the insulator protrudes
• P - built-in resonator to reduce radio interference from the ignition system
• M - copper electrode

It is worth giving preference to products from trusted manufacturers. To date, there are many certified points where you can pick up original parts. Companies such as NGK, Denso, Bosh, Brisk are considered popular. It is worth talking about some of them in more detail:

1. Bosch. These products are famous for German quality, the products occupy a leading position in the market. They are used for cars such as Toyota, Mitsubishi, Fiat, Audi. The manufacturer offers motorists a huge selection, among which everyone can choose something suitable. Such products can work even when the battery is low, and are notable for their long service life and environmental friendliness. Many products of this manufacturer are considered universal, they can be combined with a large number of cars.
2. Denso. They are considered a more affordable option when compared with other manufacturers. But at the same time, among their advantages, one can distinguish a long service life, versatility of products, the ability to self-clean when working at high speeds. Such spark plugs are famous for their excellent quality characteristics. The market regularly sells such products in large volumes. At the same time, the organization involved in the creation of candles offers products to Ferrari, Volkswagen, BMW, Volvo.
3. NGK. This product also has a long service life, it can be used for 50 thousand kilometers. Regardless of what the battery charge is, stable operation is noted. Such products are quite expensive, but they are notable for the high resistance of the central electrode to damage.

Making the right choice

In order not to make a mistake with the choice, it is better to be guided by the recommendations given by the manufacturer of your machine. The instructions that come with the car always have detailed recommendations on this matter. It says which brand is installed at the factory and is the best solution for the system, since the manufacturer tries to take into account all the features of the model, in particular, the technical characteristics. If you wish, you can purchase expensive candles that are unlikely to be found in the manufacturer's recommendations. At the same time, it is worth considering whether such a purchase will justify itself? When choosing, you must take into account the average speed of your ride, and the type of fuel used. Is it worth it to buy expensive candles when the engine does not require extreme power? You should focus on the following parameters:

• life time;
• the temperature at which the product will be used;
• thermal range;
• marking.

Product marking greatly simplifies the choice, but it must be borne in mind that at present there is no single marking standard, you need to know the decoding of the code of this particular manufacturer. Of course, this is not convenient, because for candles from different manufacturers, alphanumeric designations can be deciphered in completely different ways. Therefore, it is worthwhile to understand the code on the candle more carefully.

When should spark plugs be changed?

Not every motorist knows when it is time to change the spark plugs. Therefore, you should get acquainted with the main signs that the service life of the candles has already expired:

1. Turnovers began to gain much more slowly.
2. The power of the car is noticeably reduced, it is felt when driving.
3. Fuel consumption during wear increases significantly. This can also be observed with other malfunctions, but when the candles are worn out, this is one of the main indicators.
4. It is worth paying attention to the appearance of the product, it can tell whether the part is worn out or not.
5. The machine may simply not start, it may not start the first time. Problems when starting the engine directly indicate that it is time to replace the part.
6. Unstable operation of the motor may be observed, it may twitch during the trip, troit, so to speak. It can also work in waves, which will also be felt.
7. Due to the unstable operation of the motor, the corresponding vibrations are transmitted to the cabin.

Spark plugs for popular cars

When you realize that it's time to replace the products, you should start looking for a suitable option. Many motorists refuse to purchase the so-called heaped spark plugs. This applies to such budget cars as Hyundai, VAZ, Solaris, Logan. It also makes no sense to buy expensive products for drivers whose cars are under warranty. The fact is that the replacement of candles in this case is necessary for each passage of maintenance. Practice shows that, on average, a car manages to cover about 15 thousand kilometers during this time. Therefore, there is no point in purchasing expensive products.

More expensive candles promise a long service life, but if a replacement is required according to the regulations, then they will have to be changed. And an ordinary nickel candle easily passes 15 thousand kilometers, while it is recommended by the car manufacturer. Each manufacturer has models that are included in a number of budget ones. So, for Logan, if it is under warranty, you can pick up budget options BERU Ultra X UXF79, NGK BKR6E. Their cost is affordable, it will take about 150 rubles to purchase.

If the car is no longer under warranty, then you can give preference to more expensive options. Today, the market offers excellent products coated with precious metals. By giving preference to them, you can forget about problems with candles for a long time. Remember that when replacing products, the engine must be fully functional, as well as the fuel and air systems. The product manufacturer cannot guarantee stable and long-term operation if the system is defective.

Therefore, the best solution would be to make sure before buying that everything is in order with the machine. The system should work properly on good fuel. If you find any problems, then the best choice would be to deal with the technical part. Only after that it will be possible to change products for new ones. So you avoid wasted spending.

When making a purchase, remember that it is worth checking the spark plugs before you pay for them. Dirt on the electrodes, lack of marking, deformation of the components of the product can indicate a fake or a marriage. If you regularly carry out diagnostics, change candles in a timely manner, you can count on a long engine life.

The operation of a gasoline internal combustion engine is largely dependent on spark plugs. Only a powerful and stable spark can ensure the combustion of the fuel mixture with the release of the maximum amount of energy.

In this article, we will look at Denso spark plugs, which are very popular among both motorists and professionals. We will understand their design features, the technologies used in their production, and also discuss the main advantages. The information is based on feedback from car owners.

A few words about Denso

Denso Engineering Company was founded in Japan in 1949. Its main specialization is the manufacture of automotive components: spark plugs and glow plugs, magnetos, generators, starters, engine management systems, scanners, sensors, etc. Thanks to constant scientific and technical activity and its own advanced developments, Denso has become a world leader in production of electrical appliances. Concerns such as Volvo, Opel, Toyota, Subaru, Citroen complete their cars with parts from this particular company. Subsidiaries of "Denso" are located in Japan, China, Taiwan, Singapore, Canada, USA, Brazil, Great Britain, France, Russia, Turkey, India, UAE, Morocco. The company's products are popular all over the world due to their quality and reliability.

Products of the company "Denso"

Spark plugs are not the main products of the company, but only thanks to them it has gained such fame. The concept behind the development and sale of these parts is built to provide brand shops and authorized service stations with the best of patented technology. All Denso spark plugs are manufactured to the highest quality standards and are ISO 9000 and QS 9000 certified.

Range

The company's products include more than six and a half thousand constantly updated positions and are designed for 99% of all cars produced in Europe and Asia. The range of spark plugs includes the following series:

• Standard.
• Platinum (Double Platinum).
• Iridium power.
• Iridium Tough.
• Iridium Racing.
• TwinTip.

Standard candles

The company's most popular product Denso - spark plugs positioned as standard. They are ideal for all-weather use in any gasoline engines, therefore they are considered universal.

Thanks to the U-groove technology developed by experts , spark plug standard type can reduce fuel consumption by up to 5%. At the same time, its effective ignition is ensured, and the amount of harmful impurities in the exhaust gases is also reduced.

Among the distinctive features of standard Denso candles are:

• large resource (50-70 thousand km);
• excellent heat resistance due to nickel plating;
• efficient heat distribution;
• wide range of thermal coefficients.

Denso's standard spark plugs received the most positive feedback from middle-class car owners. They are reliable, serve for a long time, and cost a little more than domestic counterparts.

Platinum

The company's unique product Denso - spark plugs Platinum series, characterized by a very long service life. Today, many manufacturers use the technology of coating the central and ground electrodes with a layer of platinum, but for the first time it was applied by Denso. These spark plugs take care of 100 thousand kilometers without any problems. And this is not the limit, but only the declared resource.

But they differ not only in resource. Thanks to the superconductor coating, they are able to provide easy and stable engine starting even when the battery voltage drops. Spark plugs from the Platinum series are supplied to the conveyors of most Japanese automakers that produce premium cars.

Iridium power

Iridium is an element of high density and excellent corrosion resistance even at temperatures exceeding 2000 0 C. It is very close to platinum in its properties, although it has a lower cost.

Denso Iridium spark plugs are also known for their wear resistance and durability, although they are much cheaper than their platinum counterparts. They are not inferior either in terms of reliability or resource.

Iridium electrode coating technology is also developed and patented by Denso. The distinctive features of these candles include:

• the thinnest central electrode to date (0.4 mm), excluding misfires;
• a powerful spark that allows the engine to instantly respond to acceleration;
• long service life.

Iridium Tough

Iridium Tough Denso spark plugs are the most successful symbiosis of the two technologies described above. A feature of their design is a double needle-shaped side electrode made of a special platinum alloy. Its thickness is only 0.7 mm. It has a significantly less cooling effect on the spark, due to which, at the moment of ignition of the combustible mixture, a stable core of the flame is formed. The results of testing candles Iridium Tough showed that this technology allows you to:

As for the resource, they are designed for 100 thousand kilometers. They are completely universal, ideal for both gasoline and LPG engines.

Iridium Racing

Iridium Racing spark plugs are designed by the company specifically for racing cars. They are used for both karts and for the uniqueness of their design lies in the use of an alloy of iridium and rhodium for the central electrode, which provides instant acceleration and almost complete combustion of the fuel mixture in the cylinders. Platinum tips on the side electrodes allow you to get the most stable and powerful spark.

The use of Iridium Racing in conventional passenger cars is also allowed, however, the type of engine must be taken into account, because these plugs are designed for high-octane gasoline.

TwinTip

Spark plugs "Denso TT" (TwinTip) are designed for those drivers who care about engine stability and fuel economy. They are equipped with nickel center and side electrodes. This technology is also a development of the company. In terms of efficiency, these candles are in no way inferior to the models described above, but they are much cheaper. Their other benefits are:

• absolute versatility (suitable for any gasoline engines and power units running on gas);
• a huge range of models, designed for 80% of all European cars;
• stable ignition, powerful spark, so that fuel consumption can be reduced by up to 5-7%;
• easy engine start.

SIP

In 2003, Denso presented super-ignition plugs, produced under the name SIP. Thanks to thin electrode technology, high quality and long service life, they are the most sought after on the assembly lines of the largest mid-range car manufacturers. The range of these candles is unusually wide. Judge for yourself. There are over 11,000 models for motorcycles and small boat engines alone. What can we say about cars.

Their popularity is due to:

• the possibility of improving the flammability of the fuel mixture with their help;
• reduction of fuel consumption up to 5%;
• increase in the power of the power unit up to 4%;
• a large resource (100 thousand km);
• a huge range of modifications.

Selection of the most suitable model

In order to choose the right spark plugs, you will need to know:

• engine's type;
• type and recommended fuel;
• recommended glow value for candles provided by the manufacturer;
• interelectrode gap;
• diameter of the threaded part of the ignition element, etc.

If you are the owner of a middle-class gasoline car, it hardly makes sense to spend money on expensive platinum candles. In this case, models from the Standard series would be ideal. Decide on the glow number and the diameter of the "skirt", and you can safely buy any of the modifications.

Does your car run on LPG? Then pay attention to the Denso K20TT spark plugs. They are suitable for most cars with gas power units. Well, if you drive a sports car, and even participate in races, get Iridium Racing without much hesitation.

In order not to make a mistake with the choice, motorists are advised to buy Denso spark plugs in a company store. So you can be sure that you are offered a Japanese original, and not a fake from China. In addition, in the store you can get advice on the applicability of a particular model.

In injection and carburetor gasoline engines, the spark to ignite the fuel mixture is supplied through the spark plug. At first glance, it seems that there are no special requirements for such a part, however, when visiting a specialized store, a motorist will see a wide range of spark plugs that differ from each other in different parameters.

SZ features

Spark plugs sold in automotive stores differ in various ways:

• Manufacturer - Bosch, NGK, Brisk and others.
• Design - single or multi-electrode.
• Heat number.
• Spark gap.
• The metal from which the electrodes are made is a copper alloy, platinum, iridium.
• Connecting dimensions - the size of the threaded part, the thread pitch, the size of the turnkey hexagon.

In a word, without special knowledge it is very difficult to choose spark plugs. Spark plug markings and interchangeability tables can help in this matter. For example, the VAZ-2105 produces domestic A17DV spark plugs, which correspond to spark plugs from other manufacturers: L15Y from Brisk, BP6ES from NGK, W7DC from Bosch and 64 from Autolite. In fact, the same candle is labeled differently by different manufacturers. What does the marking on spark plugs mean and how to understand it - we will tell below.

Spark plugs of Russian brands

The marking of spark plugs produced by domestic manufacturers is regulated by the OST 37.003.081 standard. Deciphering the marking of spark plugs is carried out by separate letters and numbers. For example, the thread of the body is indicated by the first letter. M14 x 1.25 is hidden under the letter A - the standard size characteristic of a conventional spark plug. Marking candles in the form of the letter M implies a threaded size of M18 x 1.5 - the threaded part of such a candle is larger and fits a 27 wrench.

Immediately after the letters there is a number indicating the glow number: the smaller it is, the higher temperatures a spark is knocked out. The index of the glow number of candles produced in Russia varies from 8 to 26. The most common are 11, 14 and 17 spark plugs. The marking of spark plugs according to their calorific value divides them into cold and hot. The first are installed on highly accelerated engines.

Below is an example of what spark plug markings can be and how to decipher them. Candles A17DV:

• classical carving;
• 17 - glow number;
• the size of the threaded part D - 9 millimeters; if this parameter is less, then the letter is simply not indicated;
• the letter B usually denotes the thermal cone of a protruding type insulator.

The presence of the letter P in the marking - A17DVR - means that there is a noise suppression resistor in the central electrode. The letter M in the marking indicates the use of heat-resistant copper material to create the shell of the central electrode.

In the case of the designation AU17DVRM, the letter U stands for an increased size of the hexagon - 16 instead of the standard 14 millimeters. With a larger turnkey hexagon size - 19 millimeters - the letter M is indicated: AM17B.

Marking candles of foreign brands

Spark plugs of foreign manufacturers are marked according to the same principle as domestic ones, however, other letters and numbers are used for designation. In this regard, motorists may be confused in the parameters of spare parts. To avoid this, the packages usually indicate which specific car the selected spark plugs are suitable for. The marking of candles is also often indicated in special interchangeability tables.

NGK

The Japanese company NGK is the world leader in the production of spark plugs. Its products are considered one of the highest quality and most reliable. NGK spark plug markings are as follows:

• Russian A11 corresponds to B4H.
• A17DVR can be replaced by BPR6ES.

Deciphering the marking of NGK spark plugs is simple:

• В4Н - diameter and thread pitch. The letter B corresponds to M14 x 1.25, other sizes are indicated by the letters A, C, D, J.
• Under 4 lies the heat number. This characteristic is indicated by numbers from 2 to 11.
• The size of the threaded part is 12.7 millimeters, designated H.

Marking candles BPR6ES stands for: standard thread, P - projection type insulator, R - resistor, glow number - 6, length of the threaded element - E - 17.5 millimeters, spark plug features are hidden under S. If a number is indicated after marking with a hyphen, it indicates the gap between the electrodes.

Bosch

Bosch spark plugs are labeled in a similar way. For example, the WR7DC marking stands for:

• W - standard thread 14;
• R - anti-interference resistor;
• 7 - glow number;
• D - the size of the threaded part, equal to 19 millimeters;
• C - the electrode is made of a copper alloy (O - standard alloy, S - silver, P - platinum).

Bosch candles marked WR7DC, in fact, can replace domestic A17DVR candles, which are installed in the engines of VAZ cars of various models.

Brisk

Czech company - manufacturer of spark plugs. Was founded in 1935; its products are very popular among Russian motorists.

Marking of candles is carried out as follows.

• D - standard thread 1.25 mm, designed for 14 keys, body size - 19 mm.
• О - a special design of the candle, made in accordance with ISO standards.
• R - a resistor is used, while the designation X is the resistance of the electrodes to the formation of waste.
• 15 - glow number. It varies from 8 to 19, while the 13 index is not used by the Czechs - a superstitious manufacturer.
• Y - remote spark gap.
• C - copper core of the electrode.
• 1 - the distance between the electrodes, equal to 1 millimeter.

beru

German premium brand owned by Federal Mogul. The main activity of the company is the production of various spare parts and their subsequent sale in secondary markets.

Spark plugs of this brand are marked in the following format: 14R-7DU. Decryption is carried out as follows:

• 14 - candle thread 14 x 1.25 millimeters.
• R - built-in resistor.
• 7 - glow number. Indicated by numbers from 7 to 13.
• D - threaded part 19 mm long, there is a cone seal.
• U - electrode made of copper and nickel alloy.

In the case of a different marking - 14F-7DTUO - the designations change somewhat: the dimensions of the spark plug are standard, while the nut is smaller than the seat (F), it is used only in low-power engines with a sealing ring (T), the central electrode of the spark plug is reinforced - O.

Denso

Marking Denso spark plugs, for example SK16PR-A11, begins with the size of the part and the length of the threaded part. The numbers indicate the glow number, after which information is given about the electrodes and the features of the candle itself. The letters may vary depending on the Denso series.

Full decoding of the given marking:

• S - the central electrode is made of iridium alloy, diameter - 0.7 mm, there is a platinum overlay on the side electrode.
• K - the size of the hexagon and thread.
• 16 - glow number.
• P - the spark plug electrode protrudes 1.5 mm.
• R - built-in resistor.
• A - a characteristic for such a model of candles.
• 11 - the size of the gap between the electrodes.

Champion

Candles of this manufacturer are signed in almost the same way as any other. For example, marking RN9BYC4 means:

• R - installed resistor, if E is indicated, then there is a screen, O - wire resistor.
• N - standard thread 10 mm long.
• 9 - glow number, numbered from 1 to 25.
• BYC - copper core and two side electrodes. The standard design is indicated by the letter A.
• 4 - distance between electrodes.

Varieties of spark plugs

Standard spark plugs are two-electrode: their design consists of a side and a center electrode. To date, such candles are the most common and most often installed on domestic cars. Many manufacturers offer multi-electrode devices that differ in the number of side contacts. The service life of multi-electrode spark plugs is much longer than two-electrode ones, and does not depend on the glow number. It is extremely rare to find torch and pre-chamber spark plugs - they are not very popular and are not suitable for all engines.

Lifetime

The specific type of spark plugs and their brand have a huge impact on their service life. Nickel spark plugs, for example, are designed for an average life of 30-45 thousand kilometers of a car. Platinum analogues work many times longer - they are able to last both 70 and 80 thousand kilometers.

Candles with an iridium electrode vary depending on the thickness of the electrodes and their design, their "life" can be either 69 or 120 thousand kilometers. On platinum and iridium electrodes, carbon deposits are practically not formed, due to which the combustible mixture ignites many times better. The resistance of spark plugs does not depend on what specific metal is used in their production.