Spark plugs for Nissan Cube AZ10 (2002–2008): how to select and replace without errors

Nissan Cube AZ10 is an iconic compact van with an eccentric design that has gained popularity due to its practicality and reliability. However, even such cars have weak points, and one of them is the ignition system. Candles in AZ10 with engines HR14DE (1.4 l) and HR16DE (1.6 l) require special attention: incorrect selection or untimely replacement can lead to tripping, increased fuel consumption and even damage to the catalyst.

In this article we will analyze original articles of candles, proven analogues, signs of wear and step-by-step replacement instructions. And we’ll also reveal the secret of factory markings on spark plugs Nissanwhich will help avoid counterfeits. If you are the owner Cube AZ10 or are planning to purchase one, this information will save you time and money.

Original spark plugs for Nissan Cube AZ10: part numbers and specifications

The manufacturer sets the Cube AZ10 There are two types of candles - depending on the year of manufacture and the market. For engines HR14DE (1.4 l, 88 hp) and HR16DE (1.6 l, 110 hp) original parts have the following part numbers:

• 🔧 22401-4M000 - standard nickel spark plugs (factory equipped for most markets).
• ⚡ 22401-4M005 — iridium spark plugs (installed on models for Japan and some European versions).
• 🔄 22401-4M015 — platinum spark plugs (they are less common, mainly on restyled versions).

All original candles are produced by the company NGK according to specification Nissan. Key parameters:

• 📏 Thread size: M14 × 1.25.
• 🔩 Thread length: 26.5mm (long thread, important for proper installation!).
• 🔥 Heat number: 6 (for HR14DE/HR16DE).
• 🔌 Gap between electrodes: 1.1 mm (tolerance ±0.1 mm).

⚠️ Attention: On some candles Nissan you can find markings PLZFR6A-11 - this is the internal code NGK, corresponding to the article 22401-4M005. If you see this inscription on the original packaging, this is confirmation of authenticity.

Analogs of original spark plugs: what to choose for replacement

Original candles Nissan are often overpriced - their analogues from trusted brands are cheaper, but are not inferior in quality. Main rule: correspondence of parameters (thread, heat rating, clearance). The table below shows the best analogues with confirmed compatibility:

Brand	Article	Type	Service life (thousand km)	Notes
NGK	PLZFR6A-11	Iridium	100–120	Complete analogue of the original 22401-4M005
Denso	IKH20TT	Iridium	100–110	Thin central electrode (0.4 mm)
Bosch	FR7DPX	Platinum	80–90	4 electrodes, a good alternative to nickel
Champion	RE14PYPB4	Platinum	80–90	Suitable for gas equipment
Brisk	DR15YC-1	Nickel	30–40	Budget option, but requires frequent replacement

🔹 Selection advice: If you drive mainly around the city with frequent traffic jams, give preference iridium spark plugs (NGK PLZFR6A-11 or Denso IKH20TT). They withstand high temperatures better and extend the life of ignition coils. Suitable for gas or aggressive driving platinum (Bosch FR7DPX).

⚠️ Attention: Do not buy candles with markings "Universal" or without specifying a specific article for HR14DE/HR16DE. Even if the parameters are the same, the geometry of the insulator may differ, which will lead to a breakdown on the housing.

Signs of spark plug wear: when replacement is required

The manufacturer recommends replacing spark plugs with Nissan Cube AZ10 every 60,000 km for nickel and 100,000 km for iridium/platinum. However, the actual period depends on the quality of the fuel, driving style and engine condition. The following symptoms indicate the need for replacement:

• 🚗 Engine tripping at idle or during acceleration (especially noticeable when cold).
• ⛽ Increased fuel consumption (more than 8–9 l/100 km for 1.4 l and 9–10 l/100 km for 1.6 l).
• ⚡ Misfires (error code P0300–P0304 on diagnostics).
• 🔥 Detonation when you press the gas sharply (a ringing metallic sound).
• 💨 Difficult launch in cold weather (more than 3–5 seconds of cranking the starter).

🔍 Diagnostics by appearance: If you unscrew the spark plug, its condition will indicate problems in the engine:

• 🟤 Brown or gray coating - normal wear and tear.
• ⚫ Black oily soot — oil getting into the combustion chamber (wear of valve stem seals or rings).
• ⚪ White coating - over-enriched mixture or use of low-quality fuel.
• 🔴 Red plaque — additives in gasoline (requires changing gas stations).
• 💥 Melted electrodes - detonation or incorrect heat rating.

⚠️ Attention: If traces of antifreeze are found on the spark plugs (white fluffy coating), this is a sign broken cylinder head gasket or cracks in the block. In this case, replacing spark plugs will not help - engine repair is required.

What to do if the spark plugs are new, but the engine is not working?

If the problem remains after replacing the spark plugs, check:

1. **Ignition coils** (a common problem on HR16DE - cracks in insulation).

2. **High-voltage wires** (resistance should be 5–10 kOhm).

3. **Compression in cylinders** (standard for Cube AZ10 - 12–14 bar).

4. **Injectors** (clogged injectors give similar symptoms).

Step-by-step instructions for replacing spark plugs on a Nissan Cube AZ10

Replacing spark plugs with Cube AZ10 does not require special skills, but there are nuances related to the engine layout. You will need:

• 🔧 16 mm spark plug wrench with extension (the head must be thin-walledso as not to damage the insulator).
• 🔩 10 mm socket wrench (for removing ignition coils).
• 🧲 Magnetic “fishing rod” or tweezers (to get candles from wells).
• 🧴Dielectric grease (e.g. CRC 2-26).
• 🧹 Compressor or can of compressed air (for cleaning wells).

🔹 Work order:

1. Disconnect the negative terminal of the battery (required! this will prevent a short circuit when removing the coils).

2. Remove the decorative plastic engine cover (it is secured with 4 latches).

3. Disconnect the connectors from the ignition coils (press the lock and pull up).

4. Unscrew the coil mounting bolts with a 10 mm wrench and carefully remove them. Don't pull the wires!

5. Blow out the wells with compressed air to prevent dirt from getting into the cylinders.

6. Unscrew the old spark plugs with a spark plug wrench. If the candle is stuck, use WD-40 and let stand for 10-15 minutes.

7. Apply a little dielectric grease to the threads of the new spark plugs (this will make the next replacement easier).

8. Screw in new spark plugs by hand until it stops, then tighten the key with a torque 20–25 Nm (overtightening threatens to damage the threads in the cylinder head!).

9. Install the ignition coils in reverse order, making sure they are seated tightly (there should be no play).

1. Candles with the correct article number were purchased (check the packaging!)

2. The engine has cooled down (working on a hot engine is dangerous!)

3. Have a torque wrench at hand (or experience tightening “by touch”)

4. The spark plug wells were cleaned of dirt.

5. Battery terminal disconnected

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🔹 Features for HR16DE: On a 1.6-liter engine, access to the spark plugs of cylinders 1 and 4 is difficult due to the intake manifold. You may have to remove it inlet pipe (fastened with 2 bolts).

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Never use a spark plug wrench with a "magnet" to remove spark plugs - it may damage the iridium tip. It is better to use a rubber holder or tweezers.

Common mistakes when replacing spark plugs and their consequences

Even experienced car owners sometimes make mistakes that lead to serious damage. Here are the most common of them:

• 🔧 Re-upholstery of candles — leads to damage to the threads in the aluminum cylinder head. Repairs will cost 15 000–20 000 ₽ (replacing inserts or the entire head).
• 🧹 Dirt getting into the cylinders — if you do not blow out the wells before unscrewing the spark plugs, sand can cause scoring on the cylinder walls.
• ⚡ Using candles with the wrong heat rating — “cold” candles (heat number 7–8) will lead to carbon deposits, “hot” (heat number 5) - to detonation.
• 🔌 Incorrect clearance - even a deviation of 0.2 mm can cause misfires. For Cube AZ10 the gap must be strictly 1.1 mm.
• 🔄 Confusion with coil wires - if you mix up the high-voltage wires, the engine will trip. The reels have cylinder markings (1–2–3–4).

⚠️ Attention: If after replacing the spark plugs the Check Engine with an error P0300 (multiple misfires), check:

1. The coils are connected correctly (mixed wires are a common cause).
2. Condition of new candles (defective or fake).
3. Compression in the cylinders (if the spark plug is “wet”, antifreeze may enter).

🔹 Advice: If this is your first time changing spark plugs Cube AZ10, take a photo of the location of the coils and wires to dismantling. This will help avoid confusion during assembly.

Spark plugs for Nissan Cube AZ10 on gas: what you need to know

If your Cube AZ10 equipped HBO, spark plugs wear out faster due to the higher combustion temperature of the gas. In this case:

• 🔥 Heat number should be 1–2 units colder (For example, 7 instead of 6).
• 🔌 Gap it is recommended to reduce to 0.9–1.0 mm (gas requires a “hotter” spark).
• 🛡️ Electrode material - only iridium or platinum (nickel spark plugs on gas fail after 15–20 thousand km).

🔹 The best candles for HBO Cube AZ10:

• 🏆 NGK IFR6A11 (iridium, heat number 7).
• 🥈 Denso IW20TT (iridium, gap 0.9 mm).
• 🥉 Bosch WR7DP (platinum, 4 electrodes).

⚠️ Attention: If you did not change the spark plugs after installing the HBO, check their condition through 10,000 km. The gas dries out the electrodes, and even iridium spark plugs can fail prematurely.

Is it possible to use “universal” spark plugs for gas?

No! Spark plugs marked “For HBO” have a special coating of the electrodes that prevents erosion from high temperatures. Conventional gas spark plugs will last 2-3 times less, and their wear can damage the ignition coils.

Where to buy spark plugs for Nissan Cube AZ10: trusted sources

When purchasing candles for Cube AZ10 the main thing is to avoid fakes. It is better to purchase original parts and high-quality analogues in the following places:

• 🏬 Official dealers Nissan - guarantee of authenticity, but the price is 30–50% higher than the market price.
• 🌍 Online stores:
  • Exist.ru — a large assortment, there are reviews of sellers.
  • Autodoc.ru - often hold promotions on NGK And Denso.
  • Emex.ru — specialize in Japanese cars.
• 🏪 Local stores - before purchasing, check:
  • Presence of a hologram on the packaging.
  • Laser engraving of the logo on the insulator.
  • Compliance of the article in the database (can be checked via NGK Spark Plugs App).

💰 Cost (for 2026):

• Original 22401-4M005 (NGK PLZFR6A-11) — 1 200–1 500 ₽ per piece.
• Analogues Denso IKH20TT — 800–1 000 ₽.
• Budget Brisk DR15YC-1 — 200–300 ₽.

🔹 Advice: Buy spark plugs as a set (4 pieces) - even if one spark plug fails, the rest are already close to wearing out. Installing one new spark plug can cause an imbalance in engine performance.

FAQ: Frequently asked questions about spark plugs for Nissan Cube AZ10

❓ Is it possible to put candles with a different glow number?

No, for HR14DE/HR16DE Only heat number is allowed 6. Installing “hot” spark plugs (5) will lead to detonation, “cold” spark plugs (7+) will lead to carbon deposits and misfires. The exception is engines with gas equipment, where the number 7 is allowed.

❓ How often do I change spark plugs if I drive little (5,000 km per year)?

Even with low mileage, spark plugs age - rubber seals lose elasticity, electrodes oxidize. It is recommended to replace every 4–5 years, regardless of mileage.

❓ Why does the engine run worse after replacing spark plugs?

Probable reasons:

1. Incorrect clearance (check with a feeler gauge).
2. Defective candles (especially often with cheap analogues).
3. Damage to the ignition coils during installation.
4. Oil getting into the wells (the seals need to be cleaned and checked).

❓ Which candles are better - iridium or platinum?

For Cube AZ10 preferred iridium (NGK PLZFR6A-11 or Denso IKH20TT), since they:

• They last longer (up to 100,000 km).
• They work better at high speeds.
• They heat up less, which is important for HR16DE with its tendency to overheat.

Platinum (Bosch FR7DPX) is a good alternative if iridium is not available.

❓ Is it possible to clean the candles and install them back?

Theoretically yes, but not recommended.Even if you remove carbon deposits by sandblasting or chemicals, the electrodes are already worn out, and the ceramic insulator may have microcracks. The risk of breakdown or misfire is too high.