Characteristics of ngk spark plugs. Selection of NGK spark plugs by car brand

28.09.2019

Transmission

The Japanese company NGK, in Russian the abbreviation NZhK, is one of the leaders in the production of spark plugs. Their products are of high quality and also have a long service life of candles. Reviews from motorists indicate that NGK spark plugs, despite their design and modification, are great for any type of gasoline power unit. Therefore, the products of this company will be discussed below.

General characteristics

This manufacturer has been on the market for a long time, and is well known for developing spark plugs for powertrains of well-known automotive companies. NGK's spark plug goes through rigorous testing, so there is virtually no defective product in one lot.

Due to the fact that technical progress and developments do not stand still, today NGK candles have the following technical characteristics:

resistance to harmful environments, the working part of products that work directly in the combustion chamber are made of various metals and other materials that are resistant to high temperatures, loads, as well as the effects of harmful chemical compounds that occur during the combustion of the fuel mixture;
great work resource, depending on what materials the electrodes are made of, the maximum service life of the candles can reach more than 160 thousand kilometers, and the minimum 15,000;
low cost, even copies made of precious metals do not have a great value, so the products of this company are affordable for motorists with low incomes;
optimal heat number, it's no secret that the ignition elements that are installed on modern power units contain such technical characteristics as the glow number, and depending on it, the candles are cold or hot, if the glow number of the candle and the power unit do not match, then the motor can simply become unusable.

It is important to remember that there are analogues of such products, which are produced by other companies under license from NGK. They are no different from the original ignition elements, but their quality and service life may be lower.

NGK product marking

Due to the fact that the company is engaged in the production of spark plugs for various types of power units, it has developed an individual classification of its products, which can be found on the company's official websites or printed catalogs.

The marking of NGK spark plugs consists of Latin letters, as well as digital designations, the decoding of which is given in the attached table:

In order to understand such markings, consider products that have such digital and alphabetic designations - bpr6es.

The first letter B means that the product has a thread diameter and a hexagon with a diameter of 14 millimeters / 20.8 millimeters.

The second letter P indicates that the candle has a protruding insulator, and the designation R indicates that the product has an interference suppression resistor.

The number 6 refers to potassium indicators, according to the marking given, such a candle refers to moderately hot ignition elements. The Latin marking E indicates that the thread length is 19 millimeters, and S indicates that the candle has a standard design.

Here is a description of a specific product with a specific label.

Therefore, having the technical data of the power unit on hand, the driver must make sure that the NGK BPR6ES spark plug has a standard design with moderate heat and is suitable for his power unit or you need to choose other products.

Another thing to pay attention to is the moment of tightening. It is determined by the force with which the candle must be screwed into the cylinder block so as not to collapse or unwind from strong vibration. Depends on the maximum engine speed, which is indicated in the technical documentation of the machine.

It is important to remember that when choosing these elements, you must definitely pay attention to that part of the table where the glow number is indicated. If the technical documents of the motor indicate a certain incandescent number, then the driver must remember that it is possible to choose a candle with a higher incandescence indicator, but it is strictly forbidden to choose a candle with a lower one.

Types of spark plugs produced by NGK

The company's products are varied. Consider what it offers motorists.

The classification of its ignition elements is of two types:

the metal from which the electrodes are made;
the number of side (lower) electrodes.

Let's consider each option in more detail.

To date, the electrodes of this company are made of nickel-chromium alloy, as well as precious metals. The first option refers to budget options, so it is available to any motorist.

The second option is characterized by the fact that candles with electrodes made of precious metals last longer, have a self-cleaning function, save fuel, and also increase engine power.

Of particular interest is products with platinum electrodes. Platinum candles have a declared mileage of more than 50 thousand kilometers, as well as resistance to high temperatures, and create a white (the most powerful spark), suitable for any type of engine, even those that run on gas.

A separate place is occupied by iridium spark plugs. They can serve up to 160 thousand kilometers, save about 8% of fuel, and are suitable for even the most powerful (sports) engines. Their price is slightly higher, but taking into account fuel economy, the overpayment will be beaten off after a few months of operation.

But the motor will always run like clockwork.

Now let's move on to the question of the number of electrodes.

It must be said right away that standard ignition elements have one side (lower) and upper (central) electrodes. NGK has figured out how to increase the life of its products, and to this end, the following technical innovations have been developed:

the presence of a cut in the form of the letter V on the side electrode (which divides its surface into two parts), this is done so that the resulting spark first tends to one half, and after it cokes (carbon deposits form), it goes to the second half, doubling the service life;
equipping the working part with two, three or four side electrodes is also a technical trick, which is based on the fact that if one side electrode fails, the spark will look for another, so it will remain the same powerful.

Here is a modification of NGK spark plugs.

Speaking about which spark plugs are best for a particular engine, it is safe to say that this parameter completely depends on the technical data of the power unit itself.

NGK is a recognized leader in the production of ignition elements for gasoline power units. When choosing its products, you need to pay attention to its marking, as well as the technical requirements for candles established by the engine manufacturer.

Market leaders in the production of automotive components are preferred by experienced drivers. This approach ensures reliable operation of the vehicle. It is especially important to choose the optimal parts for the internal combustion engine.

Often, motorists select NGK spark plugs by car brand. This is due to the fact that the Japanese manufacturer provides reliable products to its consumers.

The trademark of the Land of the Rising Sun is engaged in the production of a wide range of sizes of candles, so you need to carefully approach the issue of choosing products that have the desired characteristics. Special tables or nomenclature databases formed by manufacturers help in such a situation, through which verification is carried out online.

For almost a century of activity, the brand has gained a lot of experience in the development and design of car parts since 1919. Started production from a small workshop, which as a result was transformed into an international large company. The main attention was and is being paid at different stages of production to such factors:

technical parameters of the product;
performance improvement;
product improvement.

NGK iridium spark plugs are specifically designed to provide stable sparking in gasoline combustion engines operating on lean air-fuel mixtures. As a result, stable operation of the internal combustion engine with a high-quality spark is created. A feature of such devices is the ability to work with various types of fuel.

Unique production

For similar products, the design is thought out to the smallest detail and it is sometimes very problematic to provide improvement. This is due to the peculiarities of operation and unification of the product. In most cases, it is possible to correct the characteristics of candles only due to the introduction of such features into the design:

new materials with certain properties;
almost jewelry precision manufacturing;
maximum adherence to technology to ensure a consistently high result.

Such factors should be taken into account when purchasing NGK spark plugs, selection by car, which is carried out according to catalogs.

The series consists of seven varieties. Each has its own characteristics. An example is products that have three ground electrodes built into them. They were developed by special order from the Volkswagen brand. Such a product is also included in open databases and manual search tables.

Products with a single electrode, which have been upgraded by progressive engineers from an Asian company, remain in demand. Relatively few changes and improvements ensure a high degree of availability and reliable performance. A visible difference is a special V-shaped notch located on the central electrode, which allows redistributing the potential to the periphery, which has a high concentration of gasoline vapors. This solution gave guaranteed sparking in all conditions.

An innovative solution is multi-electrode candles. They incorporate the principle of duplication of operations, which increases the reliability of work. Any mode of operation of the internal combustion engine will be stable with them. The manufacturer varies the number of side electrodes within 2–4 pcs. They are located evenly around the circumference and are not prone to clogging, which has a positive effect on the resource.

The direction in which candles with a central cone electrode are made is promising. Models are additionally equipped with soldering from precious metals or alloys, including rare earth metals. Solders are located on the inner surface of the side electrodes, and platinum or iridium is most often used for them.

Valid marking

When opening the NGK online catalog, you need to understand the encoding. All products are delivered in individual packaging. Identification is carried out by coded designations installed on the boxes. The common system of end-to-end designations greatly simplifies their selection.

You can use an example to disassemble the product marking PFR5A-11 according to the position:

The type of candle is determined (P - there are platinum alloys, I - there are iridium coatings, D - reliability is increased, S - high reliability + platinum soldering, L - an elongated thread is built in, Z - there is a spark ring protruding along the edges of the skirt).
The second position describes the parameters of the spark plug key and the type of thread required for mounting/dismantling.
The third letter means the presence of noise suppression resistors.
The fifth point indicates the glow number, which the manufacturer ranges from cold "2" to hot "13".
The fifth point includes special characteristics.
At the end, the value of the interelectrode gap is set.

The manufacturer may arbitrarily add some values for more specificity. For example, when A is added, there will be no sealing washer in the design. D - provides an additional anti-corrosion coating on the outside. If G is installed, then this option indicates the presence of an additional side copper electrode, and H is evidence of a special thread.

Such knowledge greatly simplifies the search for spark plugs, according to car brands. It will be much easier to identify products.

Correct selection

Automotive retail stores offer a large selection of parts under a popular brand name. It will take a long time to figure it out on your own. To help motorists, online services have been developed for which certain sites with databases are allocated.

One such resource is https://www.ngk.de/ru/home/ . In addition to general information about the company, current product catalogs are presented. The wide range also includes high quality related products for motorists. Just click on the link to get to the official website of the company. Even beginners without knowledge of foreign languages will be able to deal with the performance of the resource, since the information is in Russian.

Products are presented for different vehicles. However, products for cars are in the greatest demand. To facilitate the search, you need to select the appropriate section with the car icon. Let's move on to the following sections:

gasoline internal combustion engines;
engines consuming liquefied gas;
automotive glow plugs;
ignition systems and coils;
temperature and oxygen sensors.

After going through the interface points, we select the appropriate Japanese company. We select the desired model and automaker. A summary table with the latest modifications will appear on the monitor. It includes all available types of engines, with technical characteristics.

Practice shows that by spending a little more money on the purchase of high-quality candles, the motorist saves significantly in the future on engine repairs. Also, the stability of adjacent systems is ensured in the process of work.

Every motorist knows well that the selection of spark plugs must be done according to the parameters recommended by the manufacturer. To date, the retail trade presents a huge selection of spark generators. In this article, we will look at spark plugNGK, selection by vehicle which will be described in detail.

Variety of NGK spark plugs

History and modernity

Japanese firm NGK Spark Plug Co., Ltd Today, it is one of the leading enterprises that offer consumers high-quality parts for internal combustion engines. Like other Japanese-made products, NZhK spark generators have earned the respect of motorists and remain in high demand. They are reliable, have excellent performance and long service life.

The company began its work as a small workshop in the 19th year of the last century, and today it is a large-scale production that has its own enterprises in different countries of the world. The company has accumulated vast experience in the design and development of automotive parts. At the same time, great attention is always paid to improving the manufactured products and increasing their operational parameters.

The manufacturer is constantly working to increase the range of its products and improve their quality.

Nomenclature range of NGK spark plugs

The catalog of spark generators of this brand is very diverse - they are offered candles of various types and designs with different characteristics. And to make it easier for car owners to navigate, to purchase candles in full accordance with the stated requirements and not to run into a fake (of which, by the way, there have been quite a few lately), we offer a brief overview of our products. This will help you make the best choice by car brand and ensure the quality of your car's engine.

NGK products (V-Line series) are designed for the correct operation of modern engines with very lean fuel. These spark generators contribute to reliable sparking, and therefore, ignition in the engine cylinder block.

The main feature of this type of product became the highest reliability during operation in various modes, regardless of the quality of the fuel assemblies.

Candles NGK

The main range of SZ NGK

To improve the quality of products in production, high-quality types of materials are used and innovative technologies are applied. The V-Line series includes 9 types of candles with different parameters. Each type has features.

The series features products with one electrode, which are brought to perfection by the best developers of the company. The introduction of minor changes made it possible to achieve more efficient functioning of the spark plugs. A V-shaped notch was applied to the (central) electrode. Because of this, the potentials are redistributed to the edges, on which the vapor concentration of the working mixture is much higher. This creates a spark.

Production of SZ with several electrodes based on duplication, in fact, this increases reliability. This ensures the formation of a spark under various operating conditions. The number of electrodes on the sides depends on the type of SZ and ranges from two to four. They are located around the electrode in the central part. Candles of this design are less clogged, they have an increased working life.

Elements with a cone-shaped key electrode having solderings from rare and precious metals are becoming increasingly popular.

Soldering is done on the electrodes located on the side. For soldering, they take iridium or platinum - these metals increase the period of correct operation of spark generators.

Types of NGK spark plugs

As mentioned above, there are 9 types of spark plugs in the product range:

Standard ignition elements with one electrode. Great for cars of various makes and models. The notch in the form of the letter V contributes to the redistribution of potentials towards the edges. This ensures uninterrupted ignition of the working mixture.
More complex multi-electrode products are created according to the principle of duplication. This ensures stable sparking, even when refueling is not of sufficient quality fuel.
Sparklers with an extra spark gap are designed for use in high soot environments.
Spark plugs with a semi-sliding surface discharge contribute to a cold start even if a large amount of carbon has accumulated on the insulator.
The hybrid sparkler combined a semi-sliding surface discharge and a platinum tip.
NGK iridium spark plugs. Iridium is a very durable type of material that is highly resistant to spark erosion. The working resource of such ignition elements is 2 times greater than that of simpler modifications.
Elements with platinum soldering on the electrodes have a constant power over the entire expected period of operation.
Special SZ for sports / racing cars withstand high loads, pressures and temperatures. Thanks to the ring-shaped side electrodes, the spark does not break through, but is fed to the main electrode.
SZ marked NGK LPG LaserLine are made exclusively for engines that run on gas. A design feature of such products is the presence of platinum inserts on the electrodes, as well as an iridium tip. This makes the candle resistant to elevated temperatures when burning gas. A special coating protects the case/copper core on the main electrode from overheating.

SZ marking and decoding

NGK elements are individually packaged and they are identified by marking printed on the hull. Her knowledge greatly simplifies the choice of car brand. Let's decipher the marking, taking as a basis a specific example:

PFR5A-11

The letter (P) indicates the type of product: D - high reliability, I - iridium spark plug, L - extended thread, P - platinum brazed, S - high reliability platinum product, Z - candles with a protruding spark ring located on the skirt. Letter designations are often combined in various combinations.
The letter symbol (F) is a characteristic of the thread and the key required for screwing / unscrewing.
Symbol (R) - the presence / absence of a resistor that suppresses interference.
The digital symbol, in this case 5, is the glow indicator (2-13, the "hotness" of the candles is determined from high to low - 2 indicates the highest indicator).
The letter symbol (A) - indicates features in the design;
Digit (11) - the value of the gap between the electrodes (7 - 0.7mm, 9 - 0.9mm, 10 - 1.0mm, 11 - 1.1mm, 13 - 1.3mm, 14 -1.4mm, 15 -1.5mm).

NGK spark plug device

To the indicated symbols, additional parameters of certain features of the SZ can be added to the markings. For example: A - product, without sealing ring; D - housing with anti-corrosion treatment; G - product with additional side copper electrodes; H - special thread and others.

What is important to know about SZ NGK

The original or a fake?

Since NGK products are in high demand, There are many fakes on the market lately.. Let's figure out how to recognize the original and distinguish it from fakes:

The packaging of the original products has high-quality sizing, the paint is not erased, the edges of the slots are distinguished by accuracy and evenness of cutting. Clear markings are easy to read.
High quality ceramics are used as an insulator in original products.
The main electrode is exactly in the center, has a copper rod. There is no contamination on the insulator that generates the spark. The electrode is flat on the side.
The original has knurled rather than threaded threads. The presence of notches and irregularities on it indicates a fake.
The nut on the terminal is screwed on very tightly. You can loosen it with enough force.
The logo on the counterfeit, as a rule, has errors.
A code is applied to the hexagon of the original product.

Original and fake

Distinguishing fake from original NGK ignition elements is very easy - you just need to carefully look at some of the main features.

Service life and cost

Effective life of NGK ignition elements may be different and depends on the specific modification. For products in the "normal" version, it is approximately 20 thousand kilometers. In turn, iridium products will quietly leave 80 thousand. The service life is affected by the conditions in which the products are operated, the quality of the working mixture, climatic conditions, and so on. It is necessary to periodically check the condition of the SZ in order to replace them in a timely manner.

When buying NGK products, do not think about saving, preferring cheaper options. So you can run into a fake that will not last long or with minimal efficiency.

Genuine NGK spark generators have the best value for money!

At the moment, the Japanese company NGK Spark Plug Co., Ltd. confidently holds the title of world leader in the production of spark plugs for almost all gasoline vehicles: from small-capacity lawn mower engines to multi-liter trucks. NGK candles are a “strong middle ground”, they are guaranteed to be able to withstand the specified parameters at the required mileage, without protruding any one parameter to the detriment of overall functionality. Therefore, NGK retains its leadership in deliveries directly to car factories. It is important for them that “original” (i.e., purchased from a third-party supplier under their own brand) candles do not cause any problems during interservice runs for the entire warranty period.

NGK TECHNOLOGIES

The classic design of the spark plug, it would seem, has not changed for at least half a century. However, in modern conditions, when environmental requirements are constantly growing, such candles are of little use. The relatively large area of the electrodes on which the discharge occurs requires an increase in voltage, the spark itself, "floating" on the surface of the electrodes, does not guarantee strict maintenance of the moment and speed of the flame front.

The V-Line technology developed by the company has become a simple and effective solution for most internal combustion engines. The essence of the technology is in applying a V-shaped groove to the end of the central electrode, which runs parallel to the side electrode. Denso also uses essentially the same technology, but to bypass NGK patents, they have a groove on the side electrode.

For candles made using V-Line technology, while maintaining other parameters, the area of \u200b\u200bspace where sparking is possible is noticeably reduced. With the same ignition system, the strength of the electrostatic field between the electrodes increases, that is, the power and stability of the spark increase in comparison with candles of a traditional design. In addition, the spark always jumps "on the edge", where the spark gap is better ventilated - when running on lean mixtures, this improves the stability of the engine, especially at idle.

NGK spark plugs with a semi-sliding surface discharge are interesting: unlike traditional multi-electrode designs, here the central electrode is completely recessed into the insulator.

The advantage of such products when working on rich mixtures or in worn motors: deposits of conductive soot here have little effect on the efficiency of the candle, and it becomes able to work with severe pollution.

If we recall NGK or platinum iridium spark plugs, then their advantages over the classic ones are obvious: this is a much more stable sparking due to the small diameter of the central electrode, and the minimum rate of erosion - and therefore the largest resource in comparison with other types. It is not without reason that representatives of this line are already installed in modern motors from the factory.

However, even here, NGK engineers found room for new experiments. The hybrid candles they created have a central platinum electrode, which is paired with a side electrode. The side electrode has a platinum soldering and two additional electrodes, working on the same principle as in candles with a semi-sliding surface discharge. When the plug becomes dirty, additional electrodes come into play, allowing the engine to run stably until the moment when it warms up to the point of carbon burnout.

INTERPRETATION OF THE MARKING OF NGK CANDLES

The products of this company are encoded by the formula type 123456-7.

B	Fixed contact nut
CM	Inclined ground electrode, compact version (insulator length 18.5 mm)
CS	Similarly
G, GV	racing spark plugs
I	Iridium electrode
IX	Advanced Iridium Electrode
J	2 specially shaped side electrodes
K	2 side electrodes
-L	Intermediate heat number
-LM	Compact type (insulator length 14.5mm)
N	Special ground electrode
P	Platinum electrode
Q	4 side electrodes
S	standard type
T	3 side electrodes
U	Semi-surface discharge
VX	Platinum Spark Plug
Y	Groove Center Electrode (V-Line Series)
Z	Special Design

For example, let's decipher the marking NGK BPR5ES-11. It has a 14 mm connecting thread for the “21st” spark plug, a protruding insulator, a conventional noise suppression resistor, glow number 6, a threaded shank 19 mm long, a standard design, a spark gap of 1.1 mm. Let's carry out a reverse selection - for example, a single-electrode candle with a 10 mm thread under the “16th” candle was removed from the car, the thread length is 19 mm, the glow number according to the table corresponds to the number 10 for NGK, the gap between the electrodes is 1 mm. Based on the known parameters, we are looking for in the NGK catalog with the marking CPR10ES-10 (a candle of the classical type, which corresponds to the parameters of the existing one) or as close as possible in terms of marking.

SELECTION OF NGK PLUGS FOR VEHICLE

However, this method is not very convenient. If we take into account the huge range of products manufactured by the company, then the best selection of NGK by car is to use the company's catalog, where sorting by makes, models, years of manufacture and engine sizes was initially performed. It is available on the company's website both in printable form (in the "Downloads" section, and in an interactive version (in the "Product Selection" section). It is not difficult to find suitable candles here even for the old "Moskvich":

HOW TO DIFFERENTIFY A FAKE

The reverse side of popularity is a huge amount of counterfeit products on the market. To be convinced of this, it is not even necessary to go to a car shop: on the same Ebay or Aliexpress, type “spark plug” in the search, as it will immediately give out a huge number of candles in a familiar package and, of course, from China. Such volumes of counterfeit products have already seriously hit the reputation of the company - in many car services, to this day, in case of any problems with ignition, they are the first to answer "First, you put normal candles, not NGK."

So, how to distinguish a fake in a shop window? Let's start with the packaging. The slightest "jambs" of printing unambiguously indicate cheap counterfeit goods; boxes for original candles are always perfect.

The build quality itself speaks for itself.

The contact tip of the original NGK seems to be made in one piece with the candle: it is impossible to unscrew it with your fingers. The markings on the insulator and metal skirt must be clear and even. The thread on the original product is rolled, so it is always smooth and even. The roughness of the thread, the traces of the cutter indicate a dubious origin. Curved electrodes, especially the deviation of the side electrode from the axis of the central one, is also a reason to refuse to buy.

For fake V-Line candles, the direction of the groove in the central electrode is almost always violated - if at the factory, when soldering the side electrode, it is centered exactly along the groove, then for “basement” candles their mutual orientation can be absolutely any. For candles with electrodes made of precious metals, since they are much more labor-intensive to manufacture, the differences with “scorched” ones are even more striking, since it is unprofitable to fully withstand complex technology in conditions of “left” production.

(SZ) serve to transmit the spark necessary to ignite the combustible mixture, without which it is impossible to start the car engine. So the choice of these "consumables" must be approached wisely. In this article, we will tell you what NGK spark plugs are, how they are selected by car, and how to distinguish an original from a fake.

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SZ features

NGK spark plug to transfer spark from coil

First, let's look at the main characteristics and features that a spark plug br6hs, bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or any other model has. First of all, it should be noted that iridium and platinum SZ are equipped with an alumina ceramic insulator to get a spark from the coil. Such an insulator is an excellent dielectric, which is characterized by excellent thermal conductivity, as well as great strength.

This type of insulator performs certain functions:

Spark overlap in the SZ models bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 and others is excluded due to the corrugated tip of the insulator. As you know, spark coating can sometimes contribute to interruptions in the system and the ignition coil, which occurs especially often in high humidity.
The result is high thermal conductivity as well as mechanical strength. The insulator allows you to provide the most efficient heat dissipation, as well as protection of the SZ bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or another model from overheating. In addition, the insulator can protect the iridium or platinum SZ from damage during strong heating or sudden cooling.
Thanks to the use of a special powder agent for connecting the insulator to the metal case, the design of the SZ bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or another model is the most hermetic.

Another feature of NGK iridium and platinum SZ for a car with a high glow number and an extended service life or service life is a copper core. This design component is characterized by low resistance, as well as a fairly high thermal conductivity.

Thereby:

The spark on the SZ bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or another model from the coil will be more stable than on analogues where a copper-lined metal rod is used.
The level of cooling efficiency of the SZ increases for a bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or any other vehicle as a result of rapid heat transfer, which is transferred to the colder end of the SZ. In particular, this refers to a ceramic insulator.
SZ models bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or any other are characterized by sufficiently high resistance to the appearance of soot. Also, SZ can resist an extensive thermal range of operation.

Electrodes SZ bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or other models with a high glow number, made of a special nickel alloy, provide an increased service life. Another feature is the presence of a cold-rolled thread with a fairly high-quality surface, unlike a threaded one, respectively, it will be easier to dismantle such an SZ if necessary (the author of the video is Tips for a motorist).

Range

We will not list all SZ models with a high glow number and service life for a car, since there are a lot of them.

Let's take a look at a few lines:

V-Line and LPG Laser Line. According to the manufacturer, the SZ of this line was developed specifically for use in car services. It should be noted that LPG LaserLine models are allowed to operate in natural gas engines.
Iridium IX. Such plugs with an extended service life and a high glow number, as well as increased power, are used by many automotive manufacturers even when assembling vehicles. This type of SZ was developed for modern technologies used in internal combustion engines, but is allowed for use in older engines as an analogue.
D Power. This range of more than 60 models has been developed specifically for use in diesel engines. Candles of this line, according to the manufacturer, allow for a quick and safe cold start for the power unit.

Marking

If you have got NGK iridium spark plugs of models bpr7hs, bpmr7a, bpr6es-11, bkr6e-11 or any others, then you will probably be interested in deciphering their markings. Let's consider an example of decoding the marking on the candle bkr6e-11.

The first character indicates the diameter of the thread, in this case it is 1.4 cm:

A - 1.8 cm;
C - 1 cm;
D - 1.2 cm;
E - 0.8 cm;
AB - 1.8 cm;
BC and VC - 1.4 cm;
DC - 1.2 cm.

The next character is a structure. P means that the SZ is equipped with a protruding insulator, M is a compact device, U is an element with an additional spark gap. The third character - if R, then this is the presence of a resistor, if Z - then the resistor is inductive. The next element is the heat number. If from 2, then this is a high heat number, if up to 10, then it is low.

The fifth character is the length of the thread:

E - 1.9 cm;
EN - total length 1.9 cm, 1.27 cm of them - cut thread;
H - 1.27 cm;
L - 1.12 cm;
F - tapered snug fit.

The original or a fake?

If everything is clear with the glow number and other characteristics, let's move on to the issue of selection. In order to correctly select SZ for supplying a spark from a coil with a high service life and service life, it is necessary to be able to distinguish the original from the fake.

In order for the service life and resource to be high, first of all, pay attention to the quality of the inscriptions and drawings on the candle. Fakes have errors, the inscriptions may be uneven, while the originals have everything done perfectly. In addition, fake SZs may have the wrong logo - instead of NGK, it could be MGK, MCK, etc.
When selecting a candle with a good resource and service life, inspect the electrode - it should be central, and the rod itself should be copper. The ground electrode must be level.
On the original with a high service life, which is confirmed by reviews, there is a batch code on the hexagon, this must be taken into account when selecting.
Also, when selecting SZ for your car, pay attention to the thread - in originals with a high service life, it is knurled, its surface is even.