Why the VIN code is the key to accurate selection of spare parts

Each car has a unique identifier - VIN code (Vehicle Identification Number), which contains encrypted information about the make, model, year of manufacture, engine and even equipment. This 17-digit code allows you not only to find out the history of the car, but also select original parts up to modification. Without it, the risk of buying an incompatible spare part increases significantly, especially for rare or old models.

The problem is that many car owners still search for parts by model name or year of manufacture, without considering that the same Toyota Camry 2015 could roll off the assembly line with three different types of engines and two suspension options. The VIN eliminates this uncertainty. For example, it can be used to distinguish Volkswagen Golf with motor 1.4 TSI (CZDA) from version with 1.6 TDI (CLHA), which are identical in appearance but require different parts.

In this article you will learn where the VIN is located, how to decipher it correctly, what services professionals use to find parts, and why sometimes even original catalogs are wrong. And also - how to avoid counterfeits when buying used spare parts by VIN by checking their history through hidden databases.

Where to look for the VIN code on a car: 7 hidden and obvious places

The VIN code is duplicated in several places on the car, but not all of them are equally accessible. Main locations:

  • 📄 Windshield (lower driver's side) - the most visible place, but the code can be erased or covered with tinting.
  • 🚗 Under the hood - usually on a special plate (nameplate) next to the engine or on the spar.
  • 🔑 Driver's door pillar - on a sticker or embossed on metal (be sure to check when buying a used car!).
  • 📑 Certificate of Registration (CTC) and PTS - but there may be an error here if the car is broken.

Less obvious places where manufacturers hide the VIN:

  • 🔧 Under the back seat (for example, at BMW E60 or Mercedes W211).
  • 🚪 In the trunk under the trim (often Audi A4 B7 or Skoda Octavia A5).
  • 🔋 On battery (for some Hyundai and Kia).
⚠️ Attention: If the VIN on the body and in the documents do not match, this is a sign interrupted number. It’s better not to buy such a car - problems with the traffic police and insurance are guaranteed.
📊Where do you usually check your VIN?
On the windshield
In documents (PTS/STS)
Under the hood
On the doorway
I don't know where to look

How to decipher the VIN code yourself: what do the symbols mean?

The VIN consists of three parts, each of which carries specific information:

  1. WMI (World Manufacturer Identifier, positions 1–3) - manufacturer code. For example:
    • XTA — Toyota (Japan).
    • WDB — Mercedes-Benz (Germany).
    • 1G1 — Chevrolet (USA).
  • VDS (Vehicle Descriptor Section, positions 4–9) — description of the model, body type, engine. Often hidden here modification codes, which distinguish, for example, Ford Focus with mechanics from the version with a robot.
  • VIS (Vehicle Identifier Section, positions 10–17) - year of manufacture, plant, serial number. 10th character is the year (for example, L = 2020, M = 2021).

    • For quick decryption, use online services like VIN decoder from "Behind the Wheel" or VinFreeCheck. But remember: free services often show only basic information. To accurately select spare parts you need professional bases (more about them below).

    Position in VIN Meaning Example
    1–3 Manufacturer ID (WMI) TMB — Skoda
    4–8 Model, body type, engine JN1AZ — Nissan Almera with motor 1.6 16V
    9 Check digit (for authentication) 5
    10 Year of manufacture K = 2019
    11 Manufacturer code A — Kaluga (Russia)
    💡

    If the 9th character of the VIN does not match the calculated one (you can check through this calculator), the code is most likely broken.

    Top 5 services for searching parts by VIN code: pros and cons

    Not all databases are created equal. Here are proven services used by car dismantling yards, dealers and workshops:

    • 🔍 Partsouq — the largest catalog of spare parts for Asian and European cars. Shows original part numbers, analogues and prices. Minus: there are no Russian showdowns.
    • 🛒 EXIST — Russian aggregator with filtering by VIN. Suitable for searching both new and used parts. Plus: integration with Avto.ru and Drome.
    • 📦 RockAuto - ideal for American and Japanese cars. Here you can even find rare parts for Chevrolet Impala 2005 or Honda Accord 1998. Minus: Delivery to Russia is expensive.
    • 🔧 RetailMotors - specializes in Korean cars (Hyundai, Kia, SsangYong). Gives access to factory catalogs.
    • 🛠️ ETKA (for VW/Audi/Skoda/Seat) - official catalog of the group Volkswagen. Requires registration, but gives 100% accuracy.

    For maximum effectiveness, use combination of services. For example, find the original part number in ETKA, and then look for it using this number on Partsouq or EXIST. This way you will save up to 30% on the cost.

    ⚠️ Attention: Some services (for example, CarVertical or AutoDNA) position themselves as a “VIN check”, but in fact they only provide mileage and accident history. They are useless for finding spare parts!

    ☑️ How to correctly search for a part by VIN

    Done: 0 / 5

    Why original directories are wrong: 3 common pitfalls

    Even official catalogs like ETKA or Toyota TIS sometimes they give incorrect information. Here are the typical reasons:

    1. Changes in production. The manufacturer could change parts supplier in the middle of the year. For example, Renault Duster The 2021 was produced with two types of A-pillars, and the catalog shows only one option.
    2. Restyled models. Kia Rio In 2017, after restyling (from 07.2017), it received a different bumper, but this is not always indicated in the catalog.
    3. Options and packages. The part may vary depending on the configuration. For example, Volkswagen Passat B8 with package R-Line has unique body kits that are not suitable for the basic version.

    How to avoid mistakes?

    • 🔎 Check not only the VIN, but also body number (on the plate under the hood).
    • 📋 Check part number from a photo or an old sample.
    • 📞 Call the dealer and ask for clarification applicability by specific VIN.
    Example of a directory error

    In the catalog Ford ETIS for Focus 3 2015 with motor 1.6 Ti-VCT one generator number is indicated. But in practice there are two of them: for cars with and without air conditioning. The difference is in the pulley.

    How to check a used spare part by VIN: instructions from disassemblers

    Purchasing used parts based on VIN requires special care. Here is a step-by-step algorithm that professional disassemblers use:

    1. Check the donor VIN. Ask the seller for the VIN of the car from which the part was removed. If he refuses, this is a reason to be wary.
    2. Compare dates. The donor year of manufacture must match your car (or be no older than 1–2 years for universal parts).
    3. Use Carfax or Autocode. These services will show whether the car was in an accident (if so, the part could have received hidden damage).
    4. Check the part number. The original spare parts have an article number stamped or pasted on them. Check it against the catalogue.

    Pay special attention electronics (control units, sensors) and safety elements (pillows, belts). Buying them used without checking the donor VIN can be dangerous!

    ⚠️ Attention: At disassembly sites they often sell parts with drowned people (cars after the flood). Such spare parts can last from a week to a year and then fail. Signs: rust on connectors, cloudy liquid in hydraulic elements (for example, in racks).
    💡

    Never buy used airbags, belts or electronic components without checking the donor VIN. These parts may be damaged in an accident and not work at a critical moment.

    Alternative search methods: when VIN does not help

    There are situations when VIN is useless:

    • 🚜 Car assembled on the secondary market (for example, UAZ Patriot with engine from BMW).
    • 🔧 Detail universal (for example, a generator for several models).
    • 📜 VIN damaged or interrupted.

    In such cases use:

    • 🔢 Body/chassis numbers (on the plate under the hood).
    • 📸 Photo details - upload it to Yandex.Pictures or Google Images to find similar ones.
    • 🤝 Owner forums (for example, Drive2 or Drome). They often post there articles for rare modifications.

    For older cars (before 2000), the VIN may contain less information. In this case it will help repair book (for example, Haynes or Chilton) with detailed diagrams.

    FAQ: Frequently asked questions about searching for parts by VIN

    Is it possible to find a part by VIN if the car is after restyling?

    Yes, but need to be clarified release date (month/year). For example, Mazda 6 GH before and after the 2018 restyling it has different bumpers, although the VIN remains in the same range. Use services where you can specify month of production (for example, Partsouq).

    Why do different services show different details based on the same VIN?

    This happens due to database updates. The manufacturer can change the supplier of the part, but not all catalogs have time to update. Always check information with official dealer or several sources.

    Is it possible to tell by VIN whether a car is painted or not?

    No, the VIN only contains information about the configuration and assembly history. To check the paint, use thickness gauge or report CarVertical (there is information about repairs there).

    How to find a part for a rare car (for example, Great Wall Hover 2008)?

    For rare models:

    1. Search on Alibaba (they sell spare parts wholesale from China).
    2. Check groups in Facebook or VK by model (for example, "Great Wall Club Russia»).
    3. Contact importers — they have access to factory catalogs.
    What to do if the VIN does not contain the required part?

    Possible causes and solutions:

    • 🔹 VIN entered incorrectly - check the symbols validator.
    • 🔹 Universal part - search by article number or sizes.
    • 🔹 The car is rare - try services for a specific region (for example, Japan Parts for Japanese cars).