The air filter is the “lungs” of your car’s engine. The quality of the air-fuel mixture, engine power and even fuel consumption directly depend on its condition. But when replacing, many car owners are faced with a problem: how to choose a filter by size if the original part number is unknown or the manufacturer offers dozens of analogues? In this article we will figure out what are standard sizes of air filters, how to measure them yourself and avoid mistakes when purchasing.

It is a mistake to think that all filters for one engine are the same. Even within the same car model, dimensions may differ depending on the year of manufacture, body type or engine modification. For example, Volkswagen Passat B6 with engine 1.8 TSI and 2.0 TDI require filters with different heights and widths. And in Toyota Corolla 2015 and 2020 may have filters with identical dimensions, but different fastenings.

We have collected current air filter size chart for popular cars, including domestic models, and added practical tips on how to measure the filter without errors. You will also find out what brands (for example, Mann, Bosch, Framm) offer the best analogues of original parts and what to look for when purchasing.

Why is it important to know the exact dimensions of the air filter?

It would seem, what could go wrong if you buy a filter “similar” to the original? In practice, even a minimal discrepancy between dimensions leads to serious problems:

  • 🔧 Poor sealing. A smaller filter will not cover the housing completely, and untreated air with dust and abrasives will enter the engine, accelerating wear on the cylinders and piston rings.
  • 🚗 Power reduction. A filter that is too large can become deformed during installation, blocking air flow and causing the engine to “suffocate.”
  • ⚠️ Damage to sensors. In modern cars (for example, Skoda Octavia or Hyundai Solaris) The mass air flow sensor (MAF) is located next to the filter. Incorrect installation may cause it to break.

Another trap - filters with universal sizes. Some manufacturers (for example, K&N) offer models that “suit many cars.” In fact, such filters often require modification of the housing or adjustment, which is not always possible without special tools.

⚠️ Attention! In diesel engines (for example, Renault Duster 1.5 dCi) The air filter is often integrated with the exhaust gas recirculation (EGR) system. A mismatch in size may interfere with the EGR valve and cause an error. P0400 on the dashboard.

How to correctly measure an air filter: step-by-step instructions

If you do not have the original article number or you are buying a filter for a used car, the only reliable way is measure the old filter. Here's how to do it right:

  1. Remove the filter. It is usually located in a plastic case next to the engine. Fastening can be with latches or screws (a Phillips screwdriver is required).
  2. Clean the surface. Dust and dirt on the rubber seal will distort the measurements. Wipe the filter with a dry cloth.
  3. Use a caliper or ruler. Measure internal and external diameter (for round filters), and also length, width and height (for rectangular ones).
  4. Check the seal. Its thickness (usually 5–10 mm) can affect the overall dimensions.

An important nuance: some filters (for example, for Ford Focus 3) have trapezoidal shape. In this case, measure both sides (top and bottom) and indicate the angle of inclination if it is noticeable.

Measure the dimensions of the old filter (length/width/height)

Check the article number against the manufacturer's catalog

Check the presence of the rubber seal

Make sure the filter shape matches (rectangular/round/trapezoid)

Pay attention to the direction of air flow (indicated by the arrow on the housing)

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If the filter is severely deformed or torn, use case dimensions (internal volume where the filter is inserted). To do this:

  1. Remove the housing cover.
  2. Measure the inside walls around the perimeter.
  3. Subtract 1-2mm for sealing clearances.
⚠️ Attention! In turbocharged vehicles (e.g. Volkswagen Golf GTI) the air filter housing often has additional pipes for the turbine. When measuring, take into account their location - the filter should not block these holes.

Below are dimensions of original filters for common car models (2010–2026). The data is relevant for basic engine modifications. For an accurate selection, always check with VIN code or manufacturer's catalogue.

Make and model Engine Filter shape Dimensions (L × W × H), mm Original article Popular analogues
Lada Vesta, XRAY 1.6 (106 hp), 1.8 (122 hp) Rectangular 230 × 205 × 50 21120-1109080-00 Mann C 25004, Bosch 1 987 429 660
Toyota Corolla (E170, E210) 1.6 (122 hp), 1.8 (140 hp) Rectangular 245 × 210 × 45 17801-0D020 Framm CA 10146, Mahle LX 1033
Hyundai Solaris, Kia Rio 1.4 (100 hp), 1.6 (123 hp) Rectangular 238 × 215 × 48 28113-1B000 SCT SA 1014, Nipparts J1301010
Renault Duster, Nissan Terrano 1.6 (114 hp), 2.0 (143 hp) Oval 280 × 200 × 60 8200872907 Mann C 29003, Filtron AP 180/1
Volkswagen Polo, Skoda Rapid 1.6 (90/110 hp) Rectangular 240 × 200 × 50 6Q0 129 620 A Bosch 1 987 429 641, Mann C 25006

Important: the table shows dimensions for standard naturally aspirated engines. For turbocharged versions (eg Ford EcoBoost or VW TSI) filter dimensions may differ by 10–20 mm.

Mann

Bosch

Framm

Mahle

Other (write in comments) -->

Common mistakes when choosing a filter by size

Even knowing the dimensions, car owners often buy unsuitable filters. Here are the most common mistakes:

  • 📏 Ignoring height. Many people pay attention only to the length and width, but the height may differ by 5–10 mm. For example, a filter for Toyota Camry 2.5 60 mm high will not fit into the case from Camry 2.0 (height 55 mm).
  • 🔄 Confusion about flow direction. There is an arrow on the filter housing indicating air movement. If you install the filter backwards, the flow resistance will increase and the engine will choke.
  • 🔧 Failure to take into account fastenings. In some cars (for example, Mazda 3) the filter is fixed with latches on the housing. If the new filter is 2–3 mm thicker, the lid will not close.

Another typical mistake is buying universal filters for tuning (for example, K&N or Green Filter). They often require housing modifications or additional gaskets. Without this, the following are possible:

  • 💨 Suction of unfiltered air through the cracks.
  • 🔥 Engine overheating due to disrupted aerodynamics.
  • 🚨 Sensor errors (for example, P0100 - DMRV malfunction).
What happens if you drive with the wrong filter?

Long-term operation of a vehicle with an incorrectly sized filter leads to:

1. Increased cylinder wear (dust acts as an abrasive).

2. Reducing turbine life (in diesels and turbo engines).

3. Increased fuel consumption by 5–15% due to an imbalanced fuel/air ratio.

4. Throttle valve contamination and EGR valve (requires cleaning every 20–30 thousand km).

How to select a filter by VIN code or article number

If you are not sure about the size or are afraid of making a mistake, the most reliable way is selection by VIN code. This guarantees 100% compatibility with your car. Here's how to do it:

  1. Find VIN code (usually on the driver's door pillar or under the windshield).
  2. Enter it on auto parts websites:
    • Exist.ru
    • Autodoc.ru
    • Emex.ru
  • In the results, select the “Air Filter” section and compare the proposed options.

    • If there is no VIN code (for example, on old cars), use article number of the original filter. It can be found:

    • 📄 B instruction manual (section “Maintenance”).
    • 🔧 On old filter (usually applied with a laser or on a sticker).
    • 💻 B electronic catalogs (for example, ETKA for VW/Audi or EPC for Toyota).

    Example: for Honda CR-V 2.0 2018 original filter article number - 17220-5LA-A01. We enter it into the search on Exist.ru and get a list of analogues with exact sizes and prices.

    💡

    If you are buying a filter for a used car, check its history using the VIN code. Some models (eg BMW 3 Series E90) could be subject to engine tuning, which changes the requirements for the filter.

    Top 5 air filter manufacturers: which brand to choose

    The aftermarket offers hundreds of brands, but not all filters are equally effective. We analyzed reviews from car owners and tests from independent laboratories (for example, ADAC or Autobild) and compiled a rating of reliable manufacturers:

    1. Mann Filter (Germany)

      Leader in quality and durability. Filters Mann installed on conveyors Mercedes-Benz, BMW and Volkswagen. The average resource is 30–40 thousand km. Cons: the price is above average.

    2. Bosch (Germany)

      Optimal price/quality ratio. Suitable for 90% of popular cars. The line includes activated carbon filters for urban use.

    3. Mahle (Germany)

      Specializes in filters for sports and turbocharged engines. They are characterized by high throughput and moisture resistance.

    4. Framm (USA)

      Popular in America and Europe. Good for SUVs (eg. Toyota Land Cruiser). Disadvantage: there are fakes.

    5. SCT (South Korea)

      Budget option for Korean and Japanese cars (Hyundai, Kia, Mitsubishi). Resource - 15–20 thousand km.

    Important: even top brands have fakes. Features of the original filter:

    • 🏷️ The inscriptions and logo are clear, without blur.
    • 📦 Packaging with a hologram or protective elements.
    • 🔍 The rubber seal is uniform, without cracks.
    💡

    Premium brand filters (Mann, Bosch) are more expensive, but their service life is 20–30% higher than their budget counterparts. Savings of 200–300 rubles can result in engine repairs costing 20–30 thousand rubles.

    When to change the air filter: signs of wear

    Manufacturers recommend changing the filter every 15–30 thousand km, but the actual period depends on operating conditions. Here are signs that it's time to replace the filter:

    • 🚗 Power reduction (the car accelerates worse, becomes “stupid” when overtaking).
    • 💨 Increased fuel consumption by 10–15%.
    • 🔊 Unusual sound when the engine is running (whistle or air leak).
    • 🌫️ Visible dirt (dust, leaves, insects on the filter surface).

    In some cases the filter requires early replacement:

    • 🏜️ After traveling on off-road or dusty roads.
    • 🌧️ If the filter gets wet (for example, when driving through deep puddles).
    • 🐭 When traces of rodents are detected (mice often make nests in filters).

    Checking the filter status is simple:

    1. Remove it from the body.
    2. Hold it up to a bright light. If no light is visible through the paper, the filter is clogged.
    3. Shake it. If dust comes out of the filter, it needs to be replaced.
    ⚠️ Attention! In cars with gas cylinder equipment (GBO) The air filter gets dirty faster due to the higher combustion temperature of the gas. The recommended replacement interval is every 10–15 thousand km.

    FAQ: Frequently asked questions about air filter sizes

    Can I cut the filter if it doesn't fit?

    No! Trimming the filter breaks its tightness and reduces its filtering capacity. Dust will enter the engine through the cuts, accelerating wear. If the filter does not fit, buy a model with the correct dimensions or modify the housing (which is also not recommended).

    What is the difference between filters for gasoline and diesel engines?

    Diesel filters usually have large filter element area, since a diesel engine requires more air to burn fuel. They are also more often equipped additional seals for protection against soot. For example, a filter for Renault Duster 1.5 dCi 20% larger in area than for the petrol version.

    Is it possible to install a larger filter if it fits in the housing?

    Technically it is possible, but it is fraught with problems:

    • The resistance to air flow will increase → the engine will work under load.
    • There may be errors in the mass air flow sensor (MAF).
    • The filter may become deformed due to vibrations.

    The best option is to use a filter exact dimensionsspecified by the manufacturer.

    Which filter is better: paper or synthetic material?

    Paper filters are cheaper and suitable for most cars. Synthetic (for example, K&N) is more expensive, but:

    • Can be washed and reused (resource up to 100 thousand km).
    • They allow air to pass through better (useful for turbo engines).
    • Resistant to moisture.

    Disadvantage: they require special oil for impregnation and regular maintenance.

    Where to buy an air filter inexpensively, but with a quality guarantee?

    Optimal options:

    • Official dealers — original filters, but expensive.
    • Large online stores (Autodoc, Exist, Emex) - wide range, frequent discounts, guarantee.
    • Specialty stores (for example, for Toyota or VW) - consultants will help with the selection.

    Avoid shopping at markets or from unverified sellers - there is a high risk of running into a fake.