Nissan Almera Classic (also known as Nissan Sunny B10 or N16 depending on the market) is one of the most popular foreign cars on the secondary market of the CIS. Despite the simplicity of the design, even this model wears out over time the exhaust system elements, and resonator - is no exception. Its burnout or corrosion leads to increased noise, vibration and even the risk of exhaust gases entering the cabin.

In this article we will analyze articles of original resonators for Almera Classic (including modifications with engines GA14DE, GA16DE, QG15DE And QG18DE), we will compare them with high-quality analogues, and also give step-by-step instructions for replacement. We will pay special attention typical mistakes when selecting parts by VIN codewhich lead to the purchase of incompatible spare parts.

Original articles of resonators for Nissan Almera Classic

Original resonators from Nissan They are distinguished by high quality steel and welds, but their price often forces owners to look for analogues. Below is a table with article numbers for different modifications Almera Classic (including restyled versions).

Modification Resonator article number Notes
Almera Classic B10 (1995–2000), engine GA14DE/GA16DE 20500-4M000 Suitable for models without catalyst. Often confused with article 20500-4M005 (for versions with catalyst).
Almera Classic N16 (2000–2006), engine QG15DE/QG18DE 20500-9M000 or 20500-9M00A Version with 9M00A has a reinforced design for low quality fuel markets.
Almera Classic restyling (2003–2006), engine QG18DE (Euro-3) 20500-9M010 It has a modified geometry of the fastenings. Incompatible with earlier versions!
Almera Classic for the Japanese market (Nissan Sunny) 20500-JM000 Differs in pipe diameter (50 mm instead of 45 mm). Requires adaptation during installation.

⚠️ Attention: When ordering by article, please specify year of manufacture And body number (on the plate under the hood). For example, a resonator 20500-9M000 for N16 The 2000 may not fit the 2004 version due to changes in the mounting system.

If the original part number is not available, use spare parts catalogs (Nissan EPC, ETKA) or proven analogues, which will be discussed below.

📊 Which resonator do you prefer to install?
  • Original (Nissan)
  • Analogue (Bosal, Walker)
  • Budget (no name)
  • Universal (for welding)

The best analogues of resonators: comparison of brands

Analogs of original resonators for Almera Classic can save up to 50% of the budget, but it is important to choose trusted manufacturers. Below is the rating of brands by price/quality ratio:

  • 🥇 Bosal (articles: 264-101, 264-102) is the best choice for reliability. Uses aluminized steel to resist corrosion. Suitable for GA16DE And QG18DE.
  • 🥈 Walker (articles: 20500, 20501) - European quality, but higher price. Ideal for regions with aggressive winters (zinc treatment).
  • 🥉 Asam (articles: 30264, 30265) - a budget option with an acceptable resource (2–3 years). Counterfeits are common!
  • ⚠️ No-name (Chinese brands) - cheap, but last 1-2 seasons. Risk of burning out after 10–15 thousand km.

🔹 Advice: When buying an analogue, check pipe diameter (must match the original) and availability mounting flanges. For example, a resonator Bosal 264-101 has a flange for standard bolts Nissan, and cheap analogues often require welding.

⚠️ Attention: Some sellers present universal resonators as “suitable” for Almera Classic. Such details require pipe welding, which reduces the reliability of the system. Always check with drawing original part!

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Before buying a resonator, measure the length of the old one - even original articles may have variations of 2-3 cm for different markets.

How to determine that a resonator Almera Classic needs replacement?

Problems with the resonator appear gradually, and many owners confuse them with muffler or catalyst malfunctions. Look out for the following signs:

  • 🔊 Increased noise at medium speeds (3000–4000 rpm) - the first signal about burning out of the internal partitions.
  • 💨 Popping sounds in the exhaust system when venting gas - indicates a violation of the tightness.
  • 🚗 Body vibration at idle speed - may indicate destruction of the resonator mounts.
  • 🔥 Burning smell under the car after a trip - a sign of overheating of corroded metal.

🔧 Diagnostics: Inspect the resonator on the lift or pit. Please note:

  1. Through holes or rust on the body.
  2. Condition of welding seams (cracks are a reason for replacement).
  3. Tight fit to the connecting pipes (play is unacceptable).

⚠️ Attention: If you ignore a burnt-out resonator, this will lead to:

  • Exhaust gases entering the cabin through cracks in the body.
  • Accelerated wear of the muffler (increased load).
  • Risk of carbon monoxide poisoning when driving with the windows closed.
What happens if you drive with a leaky resonator?

In addition to noise, the destruction of the resonator leads to moisture entering the exhaust system, which accelerates corrosion of the muffler and catalyst (if equipped). In winter, this can lead to icing of pipes and their rupture.

Step-by-step instructions for replacing the resonator

Replacing the resonator with Nissan Almera Classic does not require special tools, but will require welding machine (if the fasteners are stuck) or Bulgarians for cutting off old bolts. Work is performed on a pit or a lift.

Drain the coolant (if the resonator is close to the radiator)|

Disconnect the negative terminal of the battery |

Treat bolts with WD-40 1-2 hours before starting work|

Prepare new gaskets and clamps (articles: 20680-4M000 for flanges) -->

Step 1. Dismantling the old resonator

  1. Loosen the clamps securing the resonator to the exhaust pipe and muffler (use a wrench on 14 mm).
  2. If the bolts are stuck, cut them off with a grinder, leaving 2-3 mm for gripping with pliers.
  3. Remove the resonator, check the condition of the connecting pipes (if they are corroded, it is also better to replace them).

Step 2. Installing a new resonator

  1. Check the contents of the new resonator (there should be gaskets and clamps).
  2. Place the part in place, aligning the flanges. Tighten the bolts in a cross pattern to avoid distortion.
  3. If necessary, weld the connections (if you are using a universal resonator).

Step 3: Check

Start the engine and check:

  • No air leaks (listen for hissing).
  • Tightness of connections (you can apply a soap solution - bubbles will indicate a leak).
  • No vibration at idle.

🔧 Tools that will come in handy:

  • Keys on 10 mm, 12 mm, 14 mm.
  • Grinder or hacksaw for metal.
  • WD-40 or similar rust remover.
  • Torque wrench (for tightening bolts to 25–30 Nm).
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If, after replacing the resonator, a whistle appears at high speeds, check the tightness of the joint with the exhaust pipe - most likely, the gasket is installed crookedly or damaged.

Typical mistakes when replacing a resonator

Even experienced technicians sometimes make mistakes that lead to repeated replacement or damage to the exhaust system. Here are the most common:

  • 🔧 Using old gaskets — they become tanned over time and do not provide tightness. Always take new ones (item number 20680-4M000).
  • 🔥 Overheating of pipes during welding — leads to metal deformation and cracks. Weld short seams intermittently.
  • 🛠️ Pipe diameter mismatch - if the new resonator has a pipe 50 mm, and the old one 45 mm, use adapters.
  • 💨 Ignoring corrosion on connecting pipes - rust will spread to the new resonator.

⚠️ Attention: If vibration appears on the body after replacement, check:

  • Tightening all clamps (especially the central fastening to the body).
  • Condition of rubber muffler hangers (article no. 20710-4M000).
  • Centering the resonator - it should not touch the suspension elements.

📌 Advice: After installing the new resonator, treat it heat-resistant paint (For example, Bosny or Kudo) - this will extend the service life by 20–30%.

Cost of work and spare parts: where is it cheaper?

Цена замены резонатора на Nissan Almera Classic depends on the type of part (original/analogue), region and installation method (independently or at a service station). Below are the estimated prices for 2026:

Spare part/service Price (original) Price (analog) Cost of work (service station)
Resonator (article 20500-9M000) 8 000 – 12 000 ₽ 2 500 – 5 000 ₽ (Bosal/Walker) 1 500 – 3 000 ₽
Gaskets and clamps 800 – 1 200 ₽ 300 – 600 ₽ Included in the cost of work
Welding (if necessary) — — 1 000 – 2 000 ₽
Universal resonator + modification — 1 500 – 3 000 ₽ 2 500 – 4 000 ₽

💰 Where is the best place to buy?

  • 🛒 Original parts: Official dealers Nissan or trusted online stores (Exist.ru, Autodoc).
  • 🛒 Analogues: Bosal And Walker cheaper by EMEX or AvtoAll (but check the seller's reviews!).
  • 🛒 Budget options: Local showdowns or AliExpress (risk of running into a fake).

⚠️ Attention: When purchasing from a disassembly site, ask for a warranty - even a used resonator should last at least 1–2 years. Check it for internal corrosion (shake - if noise is heard, it means the partitions are destroyed).

Frequently asked questions (FAQ)

Is it possible to drive without a resonator?

Technically yes, but this will lead to:

  • Increase noise up to 100+ dB (exceeds GOST standards).
  • Risk of damage to the muffler due to increased gas temperatures.
  • Possible problems during inspection.

Temporary solution - installation direct flow, but this will reduce engine life due to the lack of back pressure.

Which resonator is better - the original or Bosal?

Comparison:

Criterion Original (Nissan) Bosal
Service life 5–7 years 3–5 years
Price 8 000–12 000 ₽ 3 000–5 000 ₽
Corrosion resistance High (stainless steel) Medium (aluminized steel)

Conclusion: If the machine is operated in aggressive conditions (salt, humidity), the original is better. Suitable for moderate climates Bosal.

Do I need to weld the resonator when replacing it?

Depends on the type of fastening:

  • If the resonator has flange connections (bolts), no welding required.
  • If you install universal resonator, you will need to weld the pipes.
  • If the standard fasteners corrode, they will also have to be cut off and new ones welded.

🔧 Advice: Use semi-automatic welding in an argon environment - it produces a stronger seam than a manual arc weld.

What is the difference between the resonators for GA16DE and QG18DE?

Main differences:

  • Length: For QG18DE the resonator is 5–7 cm longer due to the larger engine volume.
  • Pipe diameter: GA16DE — 45 mm, QG18DE - 50 mm.
  • Mounts: On QG18DE An additional bracket is used for fixing to the body.

⚠️ Attention: Resonator from GA16DE physically can be installed on QG18DE, but this will lead to increased exhaust gas resistance and loss of power (up to 5–7 hp).

How to extend the life of a resonator?

Ways to increase resource:

  • 🛠️ Anticorrosive treatment (For example, Dinitrol 4941) every 2 years.
  • 🚿 Exhaust system cleaning in winter (removes salt, but avoid direct water entering the pipes!).
  • 🔥 Use of additives to reduce exhaust temperature (for example, Liqui Moly Auspuff-Anlage-Schutz).
  • 🚗 Avoiding prolonged idling (leads to condensation inside the resonator).