How to distinguish an original part from a fake: a step-by-step guide with photos and expert advice

Purchasing non-original spare parts is one of the main reasons for premature car breakdowns. According to Autostat, up to 40% of parts on the Russian secondary market are counterfeit or low-quality analogues. Counterfeits not only reduce the service life of components, but can also lead to emergency situations: for example, non-original brake pads Brembo have a friction coefficient 30% lower than declared, and fake timing belts Gates tear 5 times more often. In this article we will analyze 7 working methods for checking originality, which will help you avoid deception both when purchasing in online stores and at disassembly sites.

The problem is especially pressing for owners of premium brands (Mercedes-Benz, Audi, Lexus), where the price difference between the original and the fake can reach 300–500%. But also for budget models (Lada, Renault, Kia) the risks are high: for example, fake spark plugs NGK for VAZ-2114 They fail after 10–15 thousand km, while the originals last 60–80 thousand km. We have collected visual cues, digital tools and expert lifehacks, which work even without special equipment.

1. Visual inspection: 12 signs of a fake that are visible to the naked eye

The first and most accessible way to check is a thorough inspection of the part. Counterfeit parts are often issued sloppy seams, poor-quality painting and typos in markings. For example, on original brake discs ATE The logo is applied by laser engraving, and on fakes - by screen printing, which is erased the first time it is washed. Please note:

• 🔍 Casting/stamping quality: There are no burrs, pores or traces of careless processing on the original parts. Counterfeits often have rough edges (especially noticeable on aluminum parts, such as cylinder blocks Subaru).
• 🎨 Coating color and texture: original parts Bosch or Mann-Filter painted evenly, without streaks or bubbles. Counterfeits often have a matte finish instead of a glossy finish.
• 📏 Dimensional accuracy: Compare the part with the original (or reference photo). For example, fake stabilizer links Febi for Volkswagen Golf may be 2–3 mm shorter.
• 🖋️ Markings and fonts: on original parts Toyota or Honda The inscriptions are clear, without blurry letters. Counterfeits often contain typos (for example, "Made in Taiwain" instead of "Taiwan").

Pay special attention packaging. Original spare parts BMW or Mercedes are supplied in boxes with holographic stickers, barcodes and serial numbers, which can be checked on the manufacturer's website. Counterfeits are often packaged in unmarked plastic bags or in boxes with blurred logos.

⚠️ Attention: Some high-end fakes (so-called “superclones”) are visually indistinguishable from the original. In this case, only a database check or an examination at a car service center will help.

2. Checking by catalog numbers and databases

Each original part has a unique catalog number (OEM number), by which you can verify its authenticity. For example, for filters Mann-Filter is a combination of 9 digits (for example, W 712/94), and for details Toyota — type code 12345-67890. Verification methods:

1. Official catalogs of manufacturers: on websites Toyota (TechInfo), BMW (BMW Genuine Parts) or Volkswagen (ErWin) you can enter the part number and get its photo, technical specifications and a list of compatible models.
2. Spare parts aggregators: services like Exist.ru or EMEX show which brands produce a part with a given number. If your number is not in the database, it is 100% fake.
3. Mobile applications: Autodoc, PartsLink24 or TECDOC allow you to scan the barcode of a part and compare it with the database of original numbers.

Example: if you are buying a starter for Lada Vesta with number 2190-3708010-00, enter it into the search on Zap-Online. The system will show that the original manufacturer is KZATE (Samara), and analogues are produced Bosch (number 0 001 110 009) and Valeo (number 438083). If the seller claims that it is an “original” with a different number, this is a fraud.

Brand	Example catalog number	Where to check	Signs of a fake
Toyota	89904-02090 (oil filter)	TechInfo	The number does not start with 8 or 9, there is no embossing on the body
Bosch	0 242 235 503 (spark plug)	Bosch Automotive	The number on the package and the part do not match, the font is blurry
Hella	8GA 008 141-121 (headlight)	HELLA Catalog	There is no holographic sticker on the glass
VAZ (Lada)	2110-3701010 (generator)	Lada Online	The number is painted rather than stamped on the body

3. Checking by car VIN code: how to find out which part came from the factory

If you are not sure which part number is the original part number for your machine, use VIN code (vehicle identification number). It can be found:

• 📄 In PTS or STS (line "VIN").
• 🚗 On a sign under the hood (usually on the driver's side windshield or on the door pillar).
• 🔧 In electronic format via a diagnostic connector (using a scanner ELM327).

Using VIN you can find out exact catalog numbers of all original partsinstalled on the vehicle from the factory. To do this:

1. Enter VIN on one of the services:
   • Vinformer (free, basic information).
   • Autocode (paid report with details on spare parts).
   • CarVertical (international base, suitable for foreign cars).

In the "Options" or "Original Equipment" section, find a list of parts with serial numbers.

Compare these numbers with those indicated on the part you are purchasing.

Example: for Skoda Octavia A7 with VIN TMBJM7NE8F0123456 the service will show that the original number of the front brake pads is 1K0 698 151 G, and the manufacturer - TRW. If the seller offers pads with the number 1K0 698 151 X, this is either an outdated version or a fake.

⚠️ Attention: VIN check does not work for parts replaced by the previous owner. For example, if the car had a non-original radiator, the service will show the serial number, which may not match the installed part.

4. Physical tests: how to test a part without tools

Some details can be checked just before purchase using simple tests. These methods are especially useful at disassembly sites or in stores where online databases are not available.

🔋 Batteries

Original batteries Varta or Bosch have:

• 📅 Production date (stamped on the case in the format A123, where "A" is the month, "123" is the day). Counterfeits often have a date sticker on them.
• ⚖️ Weight is 10–15% more than analogues (for example, the original Varta Blue Dynamic at 60 Ah weighs 14.2 kg, and the fake one weighs 12.5 kg).
• 🔍 Corks with original threads (on fakes they often scroll).

🛞 Brake pads and discs

Carry out the following checks:

• 🔊 Sound test: Tap the brake disc with a metal object. Original wheels Brembo or ATE They make a ringing sound, while fakes make a dull sound.
• 🧲 Magnetic test: Bring a magnet to the surface of the disc. Original disks made of high-carbon steel are weakly magnetic, counterfeits (made of low-quality cast iron) are strong.
• 📏 Thickness measurement: original pads Ferodo for Ford Focus have a friction layer thickness of 12 mm, fakes - 8–10 mm.

🔥 Spark plugs

Fake candles NGK or Denso often produces:

• 🔍 Central electrode: on the original it is perfectly round and shiny, on the fake it has burrs.
• 📐 Gap between electrodes: for original spark plugs Bosch Super 4 it is 1.1 mm, for fakes it is 0.8–1.3 mm (checked with a probe).
• 🔥 Spark test: connect the spark plug to the high-voltage wire and crank the starter. The original spark plug produces a stable blue spark, while the fake spark produces a red or intermittent spark.

How to check a wheel bearing without a puller?

Spin the wheel while suspended. Original bearing SKF or FAG rotates silently, the fake rotates with creaking or play. Also pay attention to the markings: on the original it is embossed, on the fake it is applied with paint.

5. Barcode and QR code verification: what you can find out online

Many original parts have barcode (EAN-13) or QR code, which can be used to verify authenticity. For example, details Honda or Mazda often come with stickers Honda Genuine Parts, which can be scanned.

How to check:

1. Scan the code using the app Barcode Scanner (Android) or QR Reader (iOS).
2. Compare the received number with the manufacturer's database. For example, the barcode of the original filter Mann-Filter starts with a prefix 4007400.
3. Check the code on sites like CheckBarcode or Barcode Lookup. If the system does not find the information, it is a fake.

Important: some counterfeits copy barcodes from original parts. To avoid being scammed, check the code along with the catalog number and appearance of the part.

Brand	Barcode example	What to check
Mann-Filter	4007400123456	The first 6 digits must match the brand prefix
Bosch	3165140123457	The code must be read by the official application Bosch Automotive
Honda Genuine	0868912345678	The QR code leads to a page with information about the part on the website Honda

6. Check with official dealers and service centers

If you are in doubt about the authenticity of a part, please contact official dealer or to an authorized service center. They have access to manufacturer databases and special equipment for verification. For example:

• 🔧 Dealer centers Toyota, Hyundai or Volkswagen can check the part by serial number through the internal system TIS (Technical Information System).
• 🔍 Services Bosch Car Service have scanners to check electronic marks on parts (for example, on starters or generators).
• 📋 Expertise laboratories (for example, NIIAT or Auto expert) can conduct a chemical analysis of the material of the part (relevant for bearings, timing belts).

The cost of checking varies from 500 to 3,000 rubles, but it is cheaper than repairs after installing a fake. For example, in Motorservice (Moscow) checking brake pads for authenticity costs 800 rubles, and in Autospecial center (St. Petersburg) - 1,200 rubles.

⚠️ Attention: Some unscrupulous services may “confirm” the authenticity of a counterfeit part for a fee. Before contacting, check reviews about the center on Yandex.Maps or 2GIS.

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Official dealers do not check parts purchased second-hand or at disassembly sites. They can only authenticate new parts in original packaging.

7. Buying at a showdown: how to avoid running into “repainted” counterfeit goods

Parts from disassembly are a popular way to save money, but here the risk of running into a fake is especially high. According to Autostat, up to 60% of parts at disassembly sites in Russia are either non-original or restored in violation of technology. How to minimize risks:

• 📸 Ask for a photo of the details on the car (before removal). On original parts BMW or Audi Often traces of factory assembly remain (for example, paint on bolts).
• 🔧 Check signs of dismantling. If the bolts are torn off or the threads are damaged, the part was most likely removed carelessly (hidden defects are possible).
• 📋 Request documents: purchase and sale agreement indicating the VIN of the donor car, part passport (if any).
• 🔍 Inspect the part for restoration. For example, fake wheel bearings SKF often repressed into old cases.

Example: when purchasing a used turbine for Volkswagen Passat B6 check:

• Availability of the original plate with the number (for example, 03G 253 056 J).
• Shaft play (permissible - no more than 0.05 mm).
• Traces of oil on the compressor wheel (indicate a malfunction).

If the seller refuses to provide a guarantee (at least 14 days) or photographs of the part before removal, this is a reason to doubt its originality.

FAQ: Answers to frequently asked questions

Is it possible to check the originality of a part using a photograph?

Yes, but with reservations. Some services (for example, PartLink24) allow you to upload a photo of the part and compare it with the base. However, the accuracy of this method is no more than 70%. To be 100% sure, you need to check by reference number or physical inspection.

What to do if you bought a fake part?

If the part was purchased in a store:

1. Demand a refund under the law “On the Protection of Consumer Rights” (Article 18).
2. Write a complaint addressed to the store director (a sample can be downloaded from Rospotrebnadzor).
3. If they refuse, file a complaint with Rospotrebnadzor or court.

If the part was purchased secondhand or disassembled, it will be more difficult to return the money. You can try:

• Contact the police according to Art. 159 of the Criminal Code of the Russian Federation (fraud), if the seller deliberately misled.
• Leave negative feedback on the site (for example, on Avito or Drome).

What parts are most often counterfeited?

According to Autostat, top 5 counterfeit parts:

1. 🔋 Batteries (Varta, Bosch, Mutlu).
2. 🛞 Brake pads and discs (Brembo, ATE, Ferodo).
3. ⚡ Spark plugs (NGK, Denso, Bosch).
4. 🔗 Timing belts (Gates, Contitech, Dayco).
5. 🔊 Wheel bearings (SKF, FAG, NTN).

Filters are also often counterfeited (Mann, Mahle), shock absorbers (Kayaba, Monroe) and windshields (Pilkington, Saint-Gobain).

How to check the originality of a part for Chinese cars (Geely, Chery, Haval)?

For Chinese cars, the same rules apply, but there are nuances:

• Official catalogs are often updated with a delay. Use bases like China Car Parts.
• Original parts for Geely or Chery may have double markings (Chinese and European). For example, number 481Q6-1001010 for Geely Emgrand may be duplicated as C11-1001010.
• Counterfeits often come without packaging or with packaging from other brands (such as a box Bosch there is a part for Great Wall).

Can you trust parts from AliExpress?

Purchasing spare parts for AliExpress is a lottery. From our experience:

• ✅ You can buy: consumables (filters, windshield wiper blades), interior parts (covers, mats), lighting lamps (if they are certified according to ECE R37).
• ❌ Can't buy: brake pads, timing belts, bearings, electronics (control units, sensors).
• 🔍 How to reduce risks:
  • Check reviews (especially those with photos).
  • Choose sellers with a rating above 98% and the number of orders > 1,000.
  • Request video details before purchasing.

Even if the part looks original, its service life will be 30–50% lower. For example, fake stabilizer links for Kia Rio with AliExpress They fail after 20–30 thousand km instead of 80–100 thousand km for the original.