How to search for a spare part by number: a complete guide from VIN to art code

Searching for auto parts by number is the most accurate way to avoid mistakes when purchasing. Even experienced car owners are faced with a situation where visually identical parts do not fit in terms of fastenings, sizes or electrical connectors. Catalog numbers (OEM, art numbers) and VIN code cars solve this problem, guaranteeing 100% compatibility. But how to use this data correctly? Where can I look for numbers on the part itself or in the documentation? And which services provide the most accurate results?

In this article we will analyze all search methods - from decryption VIN code before working with electronic catalogs of manufacturers. You will learn how to distinguish original plates from analogues, where to look for rare spare parts for old models and how to avoid fakes. And also - critical errors, which allow 90% of buyers when ordering parts by numbers.

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1. Where to look for the spare part number: 5 places on the car and in documents

The first step is to find the part number itself. It can be specified in different formats: OEM number (original manufacturer code), art number (supplier article number) or VIN code (vehicle identifier). Here's where to look for them:

• 🔧 On the detail itself - usually embossed or lasered on a metal/plastic surface. For example, on a generator, the number may be on the back cover, and on a shock absorber, the number may be on the body.
• 📄 In the service book — original numbers are often indicated in the “Refill Capacities” or “Technical Data” sections.
• 🚗 On the nameplate under the hood - many manufacturers duplicate key numbers of units (engine, gearbox) on the plate with VIN code.
• 💻 In the electronic catalog - if the part has already been removed, find it by VIN in the program ETKA (for VW/Audi) or EPC (for Mercedes).
• 📦 On the packaging of an old spare part — if you bought the part before, the saved box may contain the supplier’s art number (for example, Bosch or Febi).

⚠️ Attention: Numbers on parts are often erased due to time or corrosion. If the code is unreadable, try cleaning the surface WD-40 and take a photo at close range - sometimes the numbers appear better in the photo than visually.

On some parts (for example, starters or power steering pumps) the number may be hidden under a layer of paint. In this case, carefully scrape off the top layer with a plastic spatula - metal tools may damage the markings.

2. VIN code vs art number: which is more accurate and when to use

Many people confuse VIN code and art number, but these are different things. VIN (Vehicle Identification Number) - a unique vehicle identifier by which all original parts can be identified. Art number - this is the code for a specific spare part, which may be original (OEM) or an analogue from a third-party manufacturer.

Criterion	Search by VIN	Search by art number
Selection accuracy	100% (takes into account the equipment and year of manufacture)	90-95% (may not take into account restyling)
Search speed	Slower (need to decrypt VIN)	Faster (direct number entry)
Suitable for	Original parts, rare configurations	Analogs, universal spare parts
Where to look	In the vehicle, under the windshield, in the doorway	On parts, in catalogs, on packaging

⚠️ Attention: If you are looking for a part for a car after restyling (for example, Toyota Camry 2018 vs 2020), VIN code will give a more accurate result. Art numbers can be the same for externally identical parts, but with different fasteners (for example, headlights before and after 2019 on Hyundai Tucson).

Critical error: 30% of buyers ignore the 17th character of the VIN code (check digit), which is why services provide incorrect data. Always check the VIN for validity through decoder before searching.

If you don't have VIN, but there is a body or chassis number, it can also be used - many catalogs (for example, Autodoc or Exist) support searching through this data.

3. How to decipher the spare part number: structure of OEM and art codes

Part numbers are not a random set of numbers - they contain encrypted information about the manufacturer, model, and even the material of the part. Let's look at the structure using an example:

• 🔢 Original OEM number (for example, 1K0 907 379 B for VW Golf):
  

  - 1K0 — model series (Golf/A3 1997-2003);
  

  - 907 - a group of parts (in this case generator);
  

  - 379 - specific modification;
  

  - B — index of change (maybe A, C, D etc.).

• 📦 Analogue art number (for example, FAG 713613010):
  

  - FAG — manufacturer’s brand;
  

  - 713613010 - unique part code (often coincides with OEM, but not always).

⚠️ Attention: If there is a letter at the end of the number (A, B, C...), it cannot be ignored! For example, 1K0 907 379 A and 1K0 907 379 B may differ in mounting or electrical connector, even if they are externally identical.

Some manufacturers use additional markings:

- Bosch: can add suffix /1, /2 for different versions of the part.

- Febi: sometimes indicates + for improved analogues (for example, 24321+).

- Japan Cars: uses a prefix JC- for universal parts.

Check the number with 2-3 sources (catalog, forum, documentation)

Make sure the letter at the end of the number matches

Check if the number is "universal" (may not work)

Compare the photo of the part with your original one -->

4. TOP 7 services for searching for spare parts by number

Not all directories are equally useful. Here are proven services with the largest database and user-friendly interface:

1. Autodoc — more than 5 million spare parts, support VIN and art numbers, filter by analogue brands. Suitable for European and Asian cars.
2. Exist.ru — one of the largest directories for professionals. There is an advanced search by parameters (for example, bearing size or generator power).
3. Emex.ru – specializes in rare and old models (for example, VAZ 2101 or Moskvitch).
4. ETKA (for VW/Audi/Seat/Skoda) - official catalog of the concern Volkswagen. 100% accurate, but requires registration.
5. EPC Mercedes - for cars Mercedes-Benz, Smart and Maybach. Supports search by VIN and body number.
6. Toyota EPC - official catalog for Toyota/Lexus. There are disassembly diagrams and numbers of fasteners.
7. Kia/Hyundai EPC - for Korean cars. Especially useful for new models (eg Kia Sportage 2023).

💡 Lifehack: If the part is rare, try searching for it through eBay or Amazon by art number. They often sell spare parts that are not in Russian catalogs. For example, for American Cars (for example, Ford Mustang) this may be the only option.

⚠️ Attention: In services like Autodoc or Exist Sometimes there are errors in linking numbers. Always check the part you find with the photo and characteristics from the manufacturer’s official catalog.

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If the service does not find the part by number, try entering it without spaces, dashes or the last letter. For example, instead of 1K0-907-379-B enter 1K0907379 or 1K0907379B.

5. How to avoid counterfeits: 5 signs of an original spare part

According to NISSAN, up to 20% of spare parts on the market are fakes. Especially often counterfeited:

- Filters (oil, air);

- Brake pads;

- Timing belts;

- Wheel bearings;

- Electronics (sensors, control units).

Here's how to distinguish the original:

• 🏷️ Packaging - must have a hologram, barcode and manufacturer's seal. Counterfeits often have typos in the brand name (for example, Boschh instead of Bosch).
• 🔍 Marking — on the original part the number is stamped clearly, without blurring. On fakes, the numbers may be applied with paint or unevenly.
• ⚖️ Weight - fake parts are often lighter due to the use of cheap materials. For example, the original starter for BMW E60 weighs ~4.2 kg, and the fake one weighs 3.5 kg.
• 🔧 Equipment — the box with the original must contain all fasteners (bolts, washers, gaskets). Counterfeits often come "naked".
• 💰 Price - if a part is 30-50% cheaper than the market average, this is a reason to be wary. For example, the original turbocharger for VW Passat B6 cannot cost less than 25,000 rubles.

🔎 How to check authenticity:

- Scan QR code on the packaging (should lead to the manufacturer’s website).

- Check the part number through the brand's official website (eg Bosch has a database of original art numbers).

- Compare the part with a photo from the electronic catalog (for example, ETKA or EPC).

Critical Information: Fake brake pads can have a 40% lower friction coefficient, which increases the braking distance on a wet road by 1.5-2 times (test data ADAC 2022).

6. Search for spare parts for rare and old cars

If your car is older than 2005 or limited edition (for example, VAZ 2104 or Mitsubishi Pajero Mini), standard catalogs may not help. Here's what to do:

1. Owner forums - on sites like Drive2.ru or Club-Toyota.ru They often post scans of original catalogs with numbers.
2. Groups on social networks - in Facebook or VK there are communities for specific models (for example, "Owners Nissan Terrano II").
3. Request in the manufacturer's archives - some brands (for example, Volvo or Mercedes) store data on spare parts for the last 30-40 years.
4. Search by parameters - if there is no number, measure the part (for example, bearing diameter or timing belt length) and search by technical specifications.

⚠️ Attention: For Soviet cars (for example, GAZ-24 or ZIL-130) original spare parts may not be available. In this case, look for universal analogues:

- Bearings according to size (for example, 6204 instead of the original number).

- Belts according to length and profile (for example, 1115MM × 10MM).

- Electronics according to characteristics (for example, relay 12V 30A).

📌 Example: For VAZ 2106 original carburetor has a number 2107-1107010-20, but it can be replaced by Solex 21083 (art number 21083-1107010) with modification of fastening.

Where to look for spare parts for vintage cars?

For vehicles over 30 years old (eg Moskvitch 412 or Volga GAZ-21) try the following resources:

1. Oldtimer Market (Germany) - specializes in spare parts for classic cars.

2. Hemmings (USA) is the largest market for vintage cars.

3. Retro Cars (Poland) - supplies parts for Eastern European cars (for example, Polski Fiat 126p).

4. Local showdowns — in Russia there are specialized dismantling shops for old cars (for example, “RetroAuto” in Moscow).

7. Frequent mistakes when searching for spare parts by number

Even experienced car owners make mistakes that lead to purchasing the wrong parts. Here are the most common:

• 🔢 Ignore last character - letter at the end of the number (for example, A, B, C) often indicates modification. For example, 1K0 907 379 A and 1K0 907 379 B may differ in connection connector.
• 📏 Year of manufacture discrepancy — parts for cars before and after restyling may have the same number, but different fastenings. Always check the year in the catalogue.
• 🔧 Buying “universal” analogues - some details (for example, windshield wipers or lamps) may match by number, but not by geometry. Always check the dimensions.
• 🌍 Regional differences - the same model for Europe and Asia may have different parts (for example, headlights with a different light beam). Check the market for your car.
• 📦 Unverified sellers - purchase on Avito or Yule without checking the number is fraught with fakes. Use only verified stores with a guarantee.

📉 Statistics: According to AutoDeal, 45% of spare parts returns are due to incorrect selection by part number. The most common mistakes made when purchasing:

1. Brake discs (mismatch in diameter or thickness).

2. Window lifters (different types of drives - cable vs rack and pinion).

3. Control units (different firmware versions).

⚠️ Attention: If you buy used spare part by number, be sure to ask the seller for a photo:

- Markings on parts;

- Fasteners and connectors;

- Comparison photo with your original part.

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Always check the part number in at least 2 sources (for example, in the catalog and on the owner forum). Even official services sometimes make mistakes in linking numbers to models.

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FAQ: Answers to frequently asked questions

Is it possible to find a spare part by the number if it is erased?

Yes, there are several ways:

1. Compare the part with the catalog (for example, in ETKA or EPC) in appearance.
2. Measure key parameters (e.g. bearing diameter or belt length) and search for them.
3. Contact the forum of the owners of your model - they can tell you the number based on the photo.
4. Use VIN code car to find the original number.

If the part is critical (for example, turbine or power steering pump), it’s better to show it to a mechanic at a service station - he will help you choose an analogue.

What is the difference between an OEM number and an art number?

OEM number (Original Equipment Manufacturer) is a code assigned by the vehicle manufacturer (for example, Toyota or BMW). It guarantees 100% compatibility, but original parts are usually more expensive.

Art number is a code assigned by the manufacturer of the spare part (for example, Bosch or Febi). It may match OEM or be unique. Analogues are cheaper, but the quality depends on the brand.

💡 Advice: To find analogues, enter OEM number in the directory (for example, Autodoc) - the system will show all compatible art numbers from different manufacturers.

How to find a spare part if the number is not in the catalogs?

Possible causes and solutions:

• ❌ Typo in the number — check the correctness of the entry (no spaces, with the correct last letter).
• ❌ The part is too new — some catalogs are updated with a delay. Try the manufacturer's official website.
• ❌ Rare item - search on foreign sites (eBay, Amazon) or contact your authorized dealer.
• ❌ Universal number - some details (for example, bearings) are sold by size, not by number.

If all else fails, order the part by VIN code through a dealer - this is the most reliable way.

Can you trust parts numbers from AliExpress?

On AliExpress They often sell cheap analogues, but the risks are high:

• ✅ Pros: low prices, wide range for Asian cars.
• ❌ Cons:

  - 60% probability of counterfeit (especially for brake pads and filters);

  - no guarantee of compatibility (numbers may be copied from original parts);

  - long delivery (2-4 weeks).

💡 Recommendation: Buy at AliExpress only consumables (for example, lamps or wiper blades) and from sellers with a rating above 98%. For critical parts (eg. timing belt) it is better to use trusted stores.

How can I check if the part number matches my car?

Checklist for checking:

1. Check the number with the original catalog (for example, ETKA for VW or EPC for Mercedes).
2. Check compatibility by VIN code on the manufacturer's website.
3. Compare the photo of the part with your original one (pay attention to the fasteners and connectors).
4. Check with the seller for which models and years of manufacture the part is intended.
5. If the part is electronic (for example, control unit), check firmware compatibility.

⚠️ Attention: Even if the number is the same, the part may not fit due to differences in configurations. For example, air conditioner in the basic and top versions of one model may have different compressors.