Muffler in Nissan Almera Classic (N16) - a unit that most often fails after 100–150 thousand kilometers. Corrosion, mechanical damage or burning of metal lead to the appearance of a characteristic roar, vibrations and even leakage of exhaust gases into the cabin. In this article, we will look at how to identify a malfunction, choose a high-quality replacement (original or analogue), and also carry out repairs yourself - taking into account the nuances of the Almera Classic design.

A special feature of this model is the compact arrangement of the exhaust system elements, which simplifies access but requires careful dismantling. For example, the resonator is attached to the body through rubber hangers, which often break if replaced carelessly. We've compiled verified data on parts prices (including rare original part numbers), common installation mistakes, and ways to extend the life of your new muffler.

Signs of a faulty muffler: when is it time to change it?

The first signal is a change in the exhaust sound. On Almera Classic with engines 1.5 (QG15DE) And 1.8 (QG18DE) a working system produces a uniform bass rumble. If there is a metallic clanging, popping or whistling sound, this is a sign burnout of internal partitions or cracks in the body.

Other symptoms:

  • 🔥 Vibrations on the body when the engine is running - indicate rupture of fasteners or deformation of pipes.
  • 💨 Burning smell in the cabin — exhaust gases may leak through cracks in the connecting flanges.
  • 🛑 Black marks on the rear bumper - soot settles due to leaky joints.
  • 🔧 Corrosion on welds - critical for cars older than 10 years (especially in regions with salt on the roads).

On Almera Classic most often suffers rear muffler can (original article number - 20620-4M000), since it is located closer to the road surface and is subject to impacts. The front part (resonator) fails less often, but its replacement is more expensive due to the complexity of dismantling.

⚠️ Attention: If you ignore cracks in the muffler, exhaust gases can enter the cabin through the trunk seals. This is dangerous due to carbon monoxide poisoning - especially when driving in traffic jams with the windows closed.
📊 How often do you check the condition of the exhaust system?
  • Once a year
  • Only when there is noise
  • Never checked
  • Only before inspection

Muffler selection: original vs analogs, prices 2026

Original spare parts from Nissan for Almera Classic They have a high service life (150–200 thousand km), but their cost is often unjustified. For example, the rear muffler can in official catalogs will cost 8–12 thousand rubles, while high-quality analogues cost 2–3 times cheaper.

Proven analogue brands:

  • 🔧 Bosal (Netherlands) - optimal price/quality ratio. Article number for the rear can: 099-1305 (price ~4,500 rub.).
  • 🔧 Walker (USA) - thick metal, but heavier than the original. Suitable for off-road driving. Article: 21357 (~5,800 rub.).
  • 🔧 Eberspächer (Germany) - premium segment, resource up to 250 thousand km. Article: 731503 (~7,200 rub.).
  • 🔧 Asomi (Russia) - a budget option (~2,500 rubles), but lasts no more than 50–70 thousand km.
Manufacturer Article Price (RUB) Resource (thousand km) Features
Nissan (original) 20620-4M000 8 000–12 000 150–200 Light weight, precise fit
Bosal 099-1305 4 200–4 800 100–130 Good sound insulation
Walker 21357 5 500–6 000 120–150 Reinforced fastenings
Eberspächer 731503 6 800–7 500 180–220 Stainless steel

When choosing, pay attention to material: cheap mufflers made of aluminized steel last 2–3 years, while stainless ones (for example, from Eberspächer) can be maintained for up to 10 years. Also check the package - the kit should contain new rubber hangers and mounting clamps.

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Before purchasing, compare the weight of the original part and the analogue one. If the difference is more than 20%, this may indicate thin metal or missing internal baffles in the muffler.

Tools and preparation for replacement

To work you will need:

  • 🔧 Head set (10, 12, 14 mm) and extension.
  • 🔧 Socket wrench for mounting bolts to the exhaust manifold.
  • 🔧 WD-40 or liquid key - stuck nuts on Almera Classic meet often.
  • 🔧 Hacksaw for metal or a grinder - in case the bolts do not come off.
  • 🔧 New gaskets (article 14045-4M000) and copper paste for sealing.

Also prepare:

  • 🚗 Inspection hole or lift — without them, replacing a muffler is extremely difficult.
  • 🔦 Flashlight — the lighting under the car is usually insufficient.
  • 🧤 Gloves and glasses — Rust and soot can damage your skin and eyes.

Cool the exhaust system (run on a cold engine)|Treat the bolts with WD-40 1-2 hours beforehand|Check for new gaskets and clamps|Prepare a metal cutting tool (in case of stuck nuts)-->

On Almera Classic There are often problems with dismantling front pipe flange (from the collector side). If the bolts do not unscrew, they will have to be cut off with a grinder, but this must be done carefully so as not to damage the threads in the manifold.

⚠️ Attention: Never use a gas wrench to unscrew the nuts on the exhaust system - it will crush the edges, after which the bolt will have to be cut off. It is better to use socket heads with an extension.

Step-by-step instructions for replacing the muffler

The replacement process takes 2–3 hours (excluding time for processing rusty bolts). Let's look at the algorithm using the back can as an example:

Step 1. Removing the old muffler

  1. Raise the car on a lift or drive it into a pit.
  2. Treat all threaded connections WD-40 and wait 15–20 minutes.
  3. Unscrew the two bolts securing the muffler to the resonator (14 mm head).
  4. Remove the rubber hangers supporting the rear can (usually there are 3 of them).
  5. Carefully remove the muffler from under the car by pulling it backwards.

Step 2. Installing a new muffler

  1. Check the integrity of the gasket between the resonator and the muffler. If necessary, replace it with a new one (14045-4M000).
  2. Apply a thin layer copper paste onto the resonator flange for tightness.
  3. Install the new muffler on the rubber hangers, then connect it to the resonator.
  4. Tighten the fastening bolts (tightening torque: 30–40 Nm).
  5. Check that there are no distortions - the muffler should not touch the body or suspension.

Step 3: Post-installation check

  1. Start the engine and let it idle for 5-10 minutes.
  2. Check the joints for leaks (put your hand there - there should be no flow of hot air).
  3. Drive 500–1000 meters, then inspect the muffler for vibrations or abnormal noise.
What to do if a whistle appears after replacement?

The whistle usually occurs due to a leaky joint between the resonator and the muffler. Check:

1) Correct installation of the gasket (it must be centered).

2) Bolt tightening torque (weak tightening leads to air leaks).

3) Integrity of rubber suspensions (if the muffler touches the body, vibrations cause a whistle).

On Almera Classic with engine 1.8 QG18DE sometimes replacement is required exhaust manifold corrugations (article 14050-4M000), if it burns out. In this case, you will have to dismantle the entire front part of the exhaust system.

Typical replacement mistakes and how to avoid them

Even experienced craftsmen make mistakes that shorten the service life of a new muffler. Here are the most common:

1. Ignoring rubber hangers

Old rubber bands often break during installation, but many people leave them “for another year.” This leads to vibrations and cracks in welds. Always change hangers (article 20635-4M000, price ~300 rub. per set).

2. Retightening the bolts

Excessive tightening torque distorts the flanges, leading to leaks. Use a torque wrench (optimal torque is 35 Nm).

3. Lack of sealing of joints

Without copper paste or a new gasket, the joint between the resonator and the muffler will begin to leak gases after 10-20 thousand km.

4. Wrong choice of muffler

Some analogues (for example, from Asomi) have a different pipe diameter, which leads to exhaust turbulence and accelerated corrosion.

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The most common reason for the rapid failure of a new muffler is ignoring corrosion on the resonator. If it is rusty, then after 1-2 years the rust will transfer to the new muffler through the joint.

Cost of service replacement vs self-repair

Prices for replacing a muffler Nissan Almera Classic in 2026 vary depending on the region and type of service station:

Service type Cost of work (rub.) Lead time Warranty
Official dealer 4 000–6 000 3–4 hours 12 months
Independent service 2 500–3 500 2–3 hours 6 months
Garage foreman 1 500–2 500 2 hours No warranty
On your own 0 (spare parts only) 3–5 hours —

The savings when replacing it yourself is 2,000–6,000 rubles, but it is important to consider the risks:

  • 🔧 Possibility of damage to neighboring parts (for example, the fuel tank if the grinder is not used carefully).
  • 🔧 No guarantee for work (if the muffler quickly rusts, it will be difficult to prove guilt).
  • 🔧 The need to purchase specialized tools (for example, heads with a flexible extension).

If you are not confident in your skills, the best option is to buy spare parts yourself (save 20–30%) and take the car to a trusted service center.

How to extend the life of a new muffler

Even a high-quality part will last longer if you follow simple rules:

1. Anti-corrosion treatment

Treat the outer surface of the muffler heat-resistant mastic (For example, Liqui Moly Auspuff-Spray). This will protect the metal from salt and moisture. Apply the compound every 10–15 thousand km.

2. Control of fastenings

Every 20 thousand km, check the condition of the rubber hangers and bolts. Loose fastenings lead to vibrations and cracks.

3. Avoid overheating

Do not accelerate on a cold engine - condensation in the muffler during sudden heating accelerates corrosion. Let the engine warm up for 2-3 minutes before driving.

4. Washing in winter

After driving on snowy roads (where salt is used), wash the underside of the car, including the muffler. This will remove aggressive reagents.

5. Exhaust system diagnostics

Check the muffler on a lift once a year. An experienced technician will notice incipient corrosion or cracks at an early stage.

💡

If you often drive off-road, install additional muffler protection made of aluminum sheet. This will protect him from hitting rocks.

FAQ: Frequently asked questions about replacing the muffler on a Nissan Almera Classic

Is it possible to drive with a burnt out muffler?

Technically yes, but it's dangerous. In addition to the noise, a burnt can releases carbon monoxide into the cabin, which can cause dizziness and loss of consciousness. Also, a faulty muffler increases the load on the engine, increasing fuel consumption by 5–10%.

How long does the original muffler last on the Almere Classic?

Under normal conditions (without off-road driving and regular washing), the original muffler works 120–180 thousand km. In regions with aggressive winters (salt, reagents), the period is reduced to 80–100 thousand km.

Do I need to change the gasket between the resonator and muffler?

Yes, definitely. The old gasket is deformed and does not provide a tight seal. Its article number is 14045-4M000, price ~200 rubles. Without replacement, a gas leak will appear after 5–10 thousand km.

Is it possible to repair a muffler by welding?

Temporary repairs are possible, but not practical. Welding thin muffler metal often results in new cracks due to vibrations. It is better to replace the entire jar - it is safer and cheaper in the long run.

Why did a knock appear after replacing the muffler?

The knocking noise is usually caused by:

  1. Incorrect installation of rubber hangers (muffler touches the body).
  2. Loose bolts securing the resonator.
  3. A foreign object getting into the jar (for example, a nut or a stone).

Check all fastenings and, if necessary, adjust the position of the muffler.