Spark plugs for Nissan Terrano 3 (R51): how to select and replace without errors

Nissan Terrano 3 (internal designation R51) is one of the most popular crossovers on the Russian market, known for its reliability and ease of maintenance. However, even such an “indestructible” car has weak points, and spark plugs are one of them. Wrong choice or untimely replacement of spark plugs can lead to misfires, increased fuel consumption and even damage to the catalyst.

In this article we will analyze all the nuances: from original articles and the best analogues to step-by-step replacement instructions with photos and videos. We will pay special attention typical mistakes that owners make when selecting spark plugs for engines MR20DE And K9K - they are the ones that are installed on Terrano 3 2014–2023. If you want to save money on a service station and do everything yourself, read on.

What spark plugs are on the Nissan Terrano 3 from the factory?

Factory spark plugs Terrano 3 depend on the engine type. The manufacturer installs original parts from NGK or Denso, but their part numbers often change depending on the year of manufacture and the sales market. Here are the official data:

Engine	Original article	Manufacturer	Gap (mm)	Service life (thousand km)
MR20DE (gasoline, 2.0 l)	22401-JM01A	NGK IFR6T11	1.1	30–40
K9K (diesel, 1.5 l)	22401-ED01A	Denso K20PR-U11	0.8	60–80
MR20DE (restyling 2017+)	22401-4M51A	NGK ILFR6H11	1.0	40–50

⚠️ Attention: On diesel Terrano 3 (K9K) Glow plugs are often confused with spark plugs. This various details! Glow plugs are responsible for heating the combustion chamber and have an article number 22401-ED00A (Beru GN105). Their replacement is required less frequently - once every 100–120 thousand km.

Interestingly, on petrol versions after 2017 Nissan started installing iridium spark plugs (NGK ILFR6H11), which last longer than standard nickel ones. However, many owners complain about their high price (from 1,200 rubles per piece) and prefer to install analogues from Bosch or Beru.

The best analogues of candles for Terrano 3: what to choose instead of the original?

Original candles from NGK or Denso are not always available, and they are often overpriced. Fortunately, there are proven analogues that are not inferior in quality. The main thing is to comply heat number And gap, otherwise you risk getting detonation or misfire.

Here is a list of the best analogues for each engine:

• 🔧 For MR20DE (petrol 2.0 l):
• 🔹 Bosch FR7DPX (platinum, resource 50 thousand km)
• 🔹 Beru ZR6SP-2 (nickel, budget option)
• 🔹 Denso IK20TT (iridium, for tuning)
• 🛢️ For K9K (diesel 1.5 l):
• 🔹 Beru GN105 (original analogue)
• 🔹 Bosch 0 250 201 023 (improved heat dissipation)
• 🔹 NGK YR7DP (for cold climates)

⚠️ Attention: On diesel Terrano 3 Do not install glow plugs with other heating time. For example, if you put instead Beru GN105 cheap Chinese equivalent, the engine can won't start in winter or get an error P0380 (incandescent circuits).

If you live in a region with harsh winters (below -25°C), we recommend that you pay attention to candles with reduced heating time (up to 4 seconds). For example, Bosch 0 250 201 035 or Denso DG-105. They are more expensive, but are guaranteed to save you from problems with cold starts.

When to change spark plugs on a Nissan Terrano 3: signs of wear

The manufacturer recommends replacing spark plugs with Terrano 3 every 30–40 thousand km for gasoline engines and 60–80 thousand km for diesel. However, these figures are arbitrary - it all depends on the quality of the fuel, driving style and operating conditions. Here key featuresthat it’s time to change the spark plugs:

• 🚗 Engine tripping (especially when cold)
• 💨 Increased fuel consumption (more than 1–1.5 l/100 km)
• ⚡ Misfires (errors P0300–P0304)
• 🔥 Detonation (engine knocking when accelerating)
• 🔋 Starting problems (especially in winter)

If on your Terrano 3 If at least one of these symptoms appears, do not delay diagnosis. For example, misfire may lead to catalyst overheating and its failure (repair will cost 30–50 thousand rubles).

⚠️ Attention: On diesel Terrano 3 (K9K) glow plug wear manifests itself differently: engine cranks the starter for a long time before starting, and from the exhaust pipe comes white smoke (not to be confused with steam!). If you ignore the problem, it may fail over time. spark plug control unit (article 23730-ED00A, price ~15 thousand rubles).

How to check spark plugs without removing them?

If you don’t have the time or tools for dismantling, you can do a quick diagnostic:

1. Start the engine in the dark.

2. Listen to the work: if you hear “twitching” or uneven sound, this is a sign of omissions.

3. Open the hood and listen to the sound coming from under the ignition coils. A crackling or “chirping” indicates a breakdown.

Step-by-step instructions: how to replace spark plugs on Terrano 3 with your own hands

Replacing spark plugs with Nissan Terrano 3 — the procedure is not the most complicated, but it requires care. The main difficulty is access to candles, especially on petrol versions with engine MR20DE. You will need:

• 🔧 Candle key by 16 mm (with rubber seal)
• 🔩 Socket wrench by 10 mm (for removing coils)
• 🧲 Magnetic holder (so as not to drop the candle into the well)
• 🧴 Dielectric grease (for coil contacts)
• 🧹 Compressor or vacuum cleaner (for cleaning wells)

⚠️ Attention: On diesel Terrano 3 (K9K) to replace the glow plugs you will need to remove intake manifold. Without experience, it is better to entrust this work to a service station - the risk of breaking the spark plug or damaging the thread is very high.

And now - step-by-step instructions for gasoline MR20DE:

Disconnect the negative terminal of the battery|Remove the decorative engine cover|Clean the area around the spark plug wells from dirt|Blow out the wells with compressed air (so that debris does not get into the cylinders)|Prepare new spark plugs and tools-->

1. Remove the ignition coils. To do this, disconnect the power connector and unscrew the fastening bolt with a 10 mm wrench. Carefully remove the spool by pulling upward (do not use excessive force!).

2. Unscrew the old spark plugs. Use a spark plug wrench with a rubber seal to avoid damaging the ceramic insulator. If the spark plug is stuck, do not try to unscrew it by force - treat the thread penetrating lubricant (For example, WD-40) and wait 10–15 minutes.

3. Clean out the wells. Before installing new spark plugs, make sure there is no debris in the wells. Use a compressor or vacuum cleaner.

4. Install new spark plugs. Twist them up manually (without a key!) so as not to damage the thread. Then hold out for a moment 20–25 Nm (for MR20DE).

5. Reassemble everything in reverse order. Don't forget to apply dielectric grease on the coil contacts to avoid oxidation.

💡 Helpful tip: If you are installing iridium spark plugs (for example, NGK ILFR6H11), their tightening torque should be 18–20 Nm - they are more fragile than nickel.

Typical mistakes when replacing spark plugs on Terrano 3

Even experienced car owners sometimes make mistakes, which later become costly. Here TOP-5 misseswhich we meet most often:

• 🔧 Using the wrong key. A spark plug wrench without a rubber seal can break the insulator candles, and a knob that is too long will break the thread.
• 🧴 Lack of lubrication on threads. If not applied copper paste or graphite lubricant on the thread, the candles may “stick” and then not come out.
• 🔥 Incorrect clearance. On petrol Terrano 3 there should be a gap 1.0–1.1 mm. If it is more or less, the engine will run unsteadily.
• 🔋 Confusion with glow plugs. On diesel versions, some “masters” try to replace spark plugs instead of glow plugs - this two different parts!
• 🚗 Ignoring errors after replacement. If after installing new spark plugs the Check Engine, you need to reset errors with the scanner (for example, ELM327). Sometimes required throttle adaptation.

⚠️ Attention: If after replacing the spark plugs the engine begins to perform worse (for example, misfire), check:

• The coils are connected correctly (mixed-up wires are a common mistake!).
• Condition of high-voltage wires (if they are old, they also need to be replaced).
• The quality of new candles (defects or fakes are not uncommon!).

💡 Expert advice: If you bought candles and doubt their originality, check them against laser marking. On the original NGK or Denso must be applied unique code, which can be checked on the manufacturer’s website.

Spark plugs for tuning: should I use iridium or platinum?

Many owners Terrano 3 thinking about installing iridium or platinum spark plugs to improve dynamics and fuel economy. But is it really that effective? Let's look at the pros and cons:

Candle type	Pros	Cons	Recommendation
Nickel (standard)	Low price (200–400 rub/piece)	Small resource (30–40 thousand km)	Optimal for budget use
Platinum	Resource 60–80 thousand km, better spark	Price 800–1,200 rub/piece	Good option for city driving
Iridium	Resource 100+ thousand km, best dynamics	Price 1,200–2,000 rub/piece	Justified for powerful engines or tuning

🔧 Important: Iridium spark plugs (NGK ILFR6H11 or Denso IK20TT) really give an increase in power by 3–5% and reduce fuel consumption by 2–3%. However, the effect is noticeable only on engines with direct injection (For example, MR20DD, which is placed on Nissan Qashqai, but not on Terrano 3).

If your Terrano 3 equipped with standard MR20DE, then the difference between iridium and platinum spark plugs will be minimal. In this case, it is better to save money and supply high-quality platinum candles, for example, Bosch FR7DPX.

Myths about iridium spark plugs

1. “They increase power by 20%” is marketing. The real increase is no more than 5%.

2. “You can drive 200 thousand km without replacement” - even iridium spark plugs wear out, just slower.

3. “They are suitable for any engine” - no, you need to select according to the heat rating and clearance.

Where to buy spark plugs for Nissan Terrano 3: verified sellers and prices

When purchasing candles for Terrano 3 the main thing is to avoid fakes. It is better to buy original parts and high-quality analogues from official dealers or trusted online stores. Here are the current prices for 2026:

Article/Model	Manufacturer	Price per piece (rub.)	Where to buy
22401-JM01A / IFR6T11	NGK (original)	800–1 200	Official dealer, Exist
FR7DPX	Bosch (platinum)	600–900	Autodoc, Autoall
IK20TT	Denso (iridium)	1 500–2 000	Denso official website
22401-ED01A / K20PR-U11	Denso (diesel)	1 000–1 400	Nissan Parts

⚠️ Attention: When purchasing on Avito or Yule the risk of running into a fake is 70–80%. Most often counterfeited:

• 🔹 Candles NGK with the inscription "Japan" (real originals are made in Japan, but fakes often have typos).
• 🔹 Candles Denso in packaging without hologram.
• 🔹 “Iridium” candles at the price of nickel ones (real iridium cannot cost less than 1,200 rubles/piece).

💡 Advice: Before purchasing, check the spark plugs for weight. Original NGK IFR6T11 weigh about 45 grams, and fakes are 10–15 grams lighter (due to cheap materials).

FAQ: Frequently asked questions about spark plugs for Nissan Terrano 3

Is it possible to use candles with a different heat rating?

No! The heat rating is selected for a specific engine. If you place too “hot” candles (for example, NGK BPR6ES instead of IFR6T11), this will lead to detonation and damage to the pistons. “Cold” candles, on the contrary, will quickly become covered with soot.

How many spark plugs are there in Nissan Terrano 3?

On petrol versions (MR20DE) — 4 candles (one per cylinder). On diesel (K9K) - also 4, but this glow plugs, not ignition.

Do I need to adjust the gap on new spark plugs?

On most modern candles (for example, NGK IFR6T11 or Bosch FR7DPX) the gap is already adjusted at the factory. But if you buy universal candles (for example, NGK BPR6ES), the gap must be checked and, if necessary, adjusted to 1.0–1.1 mm.

What happens if you don't change spark plugs for a long time?

If you ignore the replacement, over time:

• 🔥 Will increase fuel consumption (up to 2–3 l/100 km).
• 💥 Will appear misfirewhich may damage the catalyst.
• 🚗 The engine will start triple and hard to start.
• 💨 The exhaust will become black (due to incomplete combustion of fuel).

Can old candles be cleaned and reused?

Theoretically yes, but not recommended.Even if you clean off the carbon deposits, the electrodes are already worn out and the spark will be weaker. In addition, cleaning with a wire brush can damage ceramic insulator, which will lead to breakdown. It's better to spend money on new spark plugs - it's cheaper than engine repairs.