Spark plug Nissan 22401-CK81B — an original consumable that is installed on many gasoline engines of the Japanese brand. This component plays a key role in the operation of the power unit: starting stability, fuel consumption and even vehicle dynamics depend on its condition. Owners Nissan Qashqai, X-Trail, Teana and other models are often faced with the question: how to choose a high-quality analogue when the time comes for replacement? In this article we will analyze the technical characteristics, selection features and nuances of installing a candle. 22401-CK81B, and also analyze the best alternatives from leading manufacturers.

Why is this particular candle so in demand? The point is its versatility: it is suitable for engines with a distributed injection system (MPI) and some variants with direct injection (GDI). However, not everyone knows that even original parts may differ depending on the production batch. For example, spark plugs produced after 2018 are sometimes equipped with a modified central electrode for better resistance to soot. We will help you figure out how to distinguish a fake from an original and what to look for when buying.

Technical characteristics of spark plug Nissan 22401-CK81B

Original candle 22401-CK81B belongs to the class nickel with one side electrode. Its key parameters:

  • 🔧 Thread/size: M14 × 1.25 (standard for most engines Nissan)
  • ⚡ Heat number: 6 (average value, suitable for most climate zones)
  • 📏 Thread length: 26.5 mm (important for proper fit in the block head)
  • 🔥 Gap between electrodes: 1.1 mm (recommended for engines with electronic ignition)
  • 🛡️ Center electrode material: Nickel alloy with copper core (provides good heat dissipation)

The peculiarity of this model is increased service life due to special coating of electrodes, which reduces the formation of carbon deposits. The manufacturer claims a service life of up to 30,000 km, but in practice, when using high-quality fuel, candles can last 40,000–50,000 km. It is important to note that the heat number 6 makes it universal for most naturally aspirated and turbocharged engines Nissan, with the exception of highly boosted versions (for example, GT-R or 370Z, where “cold” candles with a number are required 8–9).

The candle complies with the standard JIS (Japanese Industrial Standard) and is marked BPR6ES-11 in the catalog NGK - this is its direct analogue. However, the original packaging Nissan often contains additional lubricant on the threads to protect against corrosion, which most analogues do not have.

📊 At what mileage did you last change the spark plugs?
  • Up to 20,000 km
  • 20,000–40,000 km
  • 40,000–60,000 km
  • More than 60,000 km
  • I don't remember

Compatibility with Nissan models: complete list

Candle 22401-CK81B installed on a wide range of vehicles Nissan, equipped with gasoline engines ranging from 1.6 to 3.5 l. Below is a compatibility table indicating the most popular models and motors:

Model Nissan Engine Years of manufacture Notes
Qashqai (J10, J11) HR16DE, MR20DE 2007–2021 Also suitable for Qashqai+2
X-Trail (T31, T32) MR20DE, QR25DE 2007–2020 For engines with MPI, not suitable for 2.0 dCi
Teana (J32) QR25DE, VQ35DE 2008–2014 For VQ35DE Gap check required (may vary)
Almera (N16, G15) HR16DE, QR25DE 2006–2018 Including restyled versions
Juke (F15) HR16DE, MR16DDT 2010–2019 For turbocharged MR16DDT It is recommended to check the heat rating

It is important to consider that for some engines (for example, VQ35DE in Teana or Murano) the gap between the electrodes may need to be adjusted. So, for engines with direct injection (GDI) the optimal clearance is often reduced to 0.9–1.0 mm to improve ignition of the air-fuel mixture. Before installation, always check the manual for your specific model!

⚠️ Attention: On engines MR20DD (for example, in Nissan Qashqai J11 after 2013) spark plugs with iridium coating are installed. Replacing them with 22401-CK81B possible, but will reduce the replacement interval to 20,000 km.

How to distinguish an original from a fake: 5 key signs

The auto parts market is flooded with counterfeit spark plugs, and 22401-CK81B - is no exception. Counterfeits not only reduce service life, but can also lead to misfires or even damage to the coils. Original candle Nissan has the following distinctive features:

  • 📦 Packing: Thick cardboard box with holographic sticker Nissan Genuine Parts. On the reverse side is the article number and country of production (Japan or Thailand) and barcode.
  • 🔍 Marking on the candle: Engraved on the case 22401-CK81B and logo Nissan. Letters and numbers are clear, without blurred edges.
  • 🛠️ Central electrode: Has a smooth nickel coating without scratches. Counterfeits often have a rough surface or signs of corrosion.
  • 🧲 Magnetic test: The original side electrode is not magnetic (stainless steel is used), while cheap alloys are often used in fakes.
  • 💰 Price: Average cost of the original - 800–1 200 ₽ per piece. Candles are cheaper 500 ₽ are highly likely to be counterfeit.

One of the most reliable ways to check is to inspect the threads. In the original, it is processed with high precision, and the turns have a uniform pitch. Counterfeits often have burrs or uneven cuts, which can damage the cylinder head during installation. Also note o-ring: The original is made of soft copper and is easily deformed when tightened, while the fakes use hard steel.

How to check a spark plug with a multimeter?

To diagnose a candle for breakdown, follow these steps:

1. Set the multimeter to resistance test mode (20 kOhm).

2. Connect one probe to the central electrode, the second to the body.

3. The insulator resistance must be infinite (OL). If the device shows a value of less than 10 MOhm, the spark plug is broken and must be replaced.

4. To check the spark (only on a removed spark plug!), use a special tester or bring the housing to the engine ground and crank the starter. The spark should be stable and blue.

Step-by-step instructions for replacing spark plugs

Replacing spark plugs on most models Nissan does not require special skills, but there are nuances that will help you avoid mistakes. For example, on engines HR16DE And MR20DE Access to the spark plugs is difficult due to the location of the ignition coils. Will be required 10 mm socket wrench with extension cord and spark plug wrench 16 mm with magnetic grip.

Replacement algorithm:

  1. Preparation: Disconnect the negative terminal of the battery. On engines with plastic covers (e.g. HR16DE) remove the decorative cover by releasing the latches.
  2. Removing the coils: Disconnect the power connectors from the coils, then unscrew the mounting bolts (usually 10 mm). Carefully remove the spools by pulling upwards (do not use excessive force!).
  3. Removing old spark plugs: Use a spark plug wrench to remove the spark plugs. If they get stuck, apply a few drops WD-40 and let sit for 10-15 minutes.
  4. Installing new spark plugs: Screw in the candles manually all the way, then tighten to torque 20–25 Nm (overtightening may damage the thread!).
  5. Assembly: Reinstall the coils, connect the connectors and return the decorative casing to its place.

Check completeness (4 spark plugs for 4-cylinder engine)

Prepare tools: 10 mm and 16 mm wrenches, extension, torque wrench

Clean the area around the spark plug wells with compressed air (prevents debris from entering the cylinders)

Check the gap of the new spark plugs (should be 1.1 mm, adjust with a feeler gauge if necessary)

Take a photo of the location of the coils and wires (for proper reassembly) -->

On engines VQ35DE (for example, in Nissan Teana) access to the spark plugs is difficult due to the V-shaped layout. Here you will need to remove the intake manifold or use a special flexible extension for the key. Also note replacement sequence: It is recommended to change the spark plugs one at a time to avoid dust getting into the cylinders.

⚠️ Attention: On motors MR20DD (direct injection) after replacing the spark plugs, it may be necessary to reset the control unit adaptations. To do this, perform the procedure through a diagnostic scanner or disconnect the battery for 10 minutes.

The best analogues of Nissan spark plug 22401-CK81B: comparison and recommendations

Original candles Nissan are not always available, and their price may seem overpriced. Fortunately, there are worthy analogues on the market from trusted brands. The main thing is to choose models with identical parameters: thread M14 × 1.25, heat number 6 and gap 1.1 mm.

Comparative table of popular analogues:

Manufacturer Article Price (per piece) Features Recommendation
NGK BPR6ES-11 600–800 ₽ Direct analogue, nickel electrode, resource up to 30,000 km ⭐ The best choice in terms of price/quality ratio
Denso K20PR-U11 700–900 ₽ Improved insulation, high temperature resistance ⭐ Optimal for turbocharged engines
Bosch FR7DCX+ 500–700 ₽ Median electrode, good spark in cold weather ⚠️ Possible problems with resource when driving on gas
Beru 14FR-6DU 400–600 ₽ Budget option, suitable for a quiet ride ❌ Not recommended for high compression engines
Champion RC9YC 350–500 ₽ Soft start in cold weather, but quick wear ⚠️ For temporary replacement only

For engines with GDI (For example, MR16DDT in Nissan Juke) it is better to choose candles with iridium or platinum plated, such as NGK ILFR6A or Denso IK20. They are more expensive (from 1 500 ₽ per piece), but their resource reaches 100,000 km, and spark stability is higher, which is critical for direct injection systems.

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When purchasing analogues, always check for a certificate of conformity. The packaging must indicate the quality standard (eg ISO 9001 or JIS D 5002).

Common problems and their solutions

Even high-quality candles can cause problems if you do not take into account the operating conditions. Let's look at typical situations and ways to eliminate them:

  • 🔥 Misfires: If the engine "troubles", check the spark plugs for carbon deposits or oil deposits. Black dry carbon deposits indicate a rich mixture (problem with the oxygen sensor or injectors), and oil deposits indicate wear on the valve stem seals.
  • ⚡ Weak spark: The reason may be an increased gap (more 1.3 mm) or worn ignition coil. Check the coil resistance with a multimeter (normal: 0.5–1.0 Ohm for the primary winding).
  • 🛑 Difficulty starting in cold weather: The culprit is often spark plugs with a low heat rating (less than 6). For cold climates it is better to use “hot” candles (for example, NGK BPR5ES-11 with number 5).
  • 💨 Increased fuel consumption: If the spark plugs have not been changed for more 50,000 km, their wear leads to inefficient combustion of the mixture. Replacing with new ones will reduce the cost of 5–10%.

Particular attention should be paid candle wells. On engines HR16DE And MR20DE they often become clogged with dirt, which leads to damage to the insulators when unscrewing the spark plugs. Before replacing, be sure to blow out the wells with compressed air or use a vacuum cleaner.

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If knocking or vibration occurs after replacing the spark plugs, immediately check the tightening torque. Retightening the spark plug can deform the threads in the block head, which will require expensive repairs.

Service life and maintenance recommendations

The manufacturer recommends replacing spark plugs 22401-CK81B every 30,000 km, but this interval may vary depending on operating conditions:

  • 🚗 Quiet ride around the city: Candles last up to 40,000 km, but require cleaning of carbon deposits every 15,000 km.
  • 🏁 Aggressive driving style: The resource is reduced to 20,000–25,000 km due to increased loads.
  • ⛽ Gas use (GBO): The combustion temperature of gas is higher, so the spark plugs wear out 30% faster. It is recommended to use “cold” candles with a number 7–8.
  • 🌡️ Extreme Temperatures: In hot climates or with frequent trips over short distances, the spark plugs become covered with soot faster. In such cases, periodic ultrasonic cleaning helps.

Following several rules will help extend the life of candles:

  1. Use fuel with an octane rating of at least 95 (better 98 for turbocharged engines).
  2. Avoid idling the engine for long periods of time as this will lead to carbon deposits.
  3. Regularly (once every 10,000 km) check the condition of the spark plugs. The normal color of electrodes is light brown. White coating indicates a lean mixture, black - a rich one.
  4. When installing new spark plugs, always apply to the threads. anti-seize paste (For example, Liqui Moly Kupfer-Spray) to avoid sticking.

If you operate your vehicle in conditions of high humidity or frequent temperature changes, it is recommended to reduce the replacement interval to 20,000–25,000 km. This is due to the risk of corrosion of the electrodes and deterioration of the insulating properties of the ceramics.

FAQ: answers to frequently asked questions

Can iridium coated spark plugs be used instead of 22401-CK81B?

Yes, but with reservations. Iridium spark plugs (eg NGK ILFR6A) have a thinner central electrode and high wear resistance. They are suitable for engines HR16DE, MR20DE, but their high cost is justified only for mileages exceeding 100,000 km per year. For normal use, high-quality nickel analogues are sufficient.

What happens if you do not change spark plugs for longer than the recommended period?

The consequences range from increased fuel consumption (by 10–15%) to serious damage:

  • Misfires leading to damage to the catalyst.
  • Cylinder detonation, which can destroy pistons or valves.
  • Problems with starting the engine, especially in cold weather.

On engines with direct injection (GDI) worn-out spark plugs provoke the formation of carbon deposits on the intake valves, which requires cleaning them.

What spark plug gap is optimal for gas (LPG)?

For gas operation, it is recommended to reduce the gap to 0.7–0.9 mm. This is due to the higher breakdown voltage of the gas-air mixture. However, not all spark plugs allow such adjustment - for example, in iridium models the gap is fixed. In this case, it is better to choose specialized candles for HBO, such as Beru Ultra-X 79.

Why did the engine vibrate after replacing the spark plugs?

Most likely reasons:

  • Uneven tightening of spark plugs (check the torque with a torque wrench).
  • Debris getting into the spark plug wells (requires blowing with compressed air).
  • Incorrect heat rating (too “cold” or “hot” candles).
  • Damage to the insulator during installation (inspect the spark plugs for cracks).

If the vibration persists, check the compression in the cylinders - perhaps the problem lies elsewhere.

Can old candles be cleaned and reused?

Theoretically yes, but with a number of caveats:

  • Cleaning is only possible for nickel spark plugs (iridium and platinum spark plugs cannot be restored).
  • Use a sandblaster or ultrasonic bath - mechanical cleaning (with sandpaper) will damage the coating.
  • After cleaning, be sure to check the gap and integrity of the insulator.
  • The service life of restored spark plugs does not exceed 10,000 km.

For most cases, reuse is not practical - it is cheaper to buy new candles.