How to Find Group Numbers for Rare or Imported Cars

In today’s globalized automotive market, rare and imported cars are becoming increasingly popular among enthusiasts and collectors. However, one of the biggest challenges owners face is identifying the correct group numbers for parts, especially when dealing with insurance, repairs, or customization. Whether you own a vintage European classic, a JDM (Japanese Domestic Market) gem, or a limited-edition American muscle car, knowing how to locate these critical identifiers can save time, money, and frustration.

Why Group Numbers Matter for Rare and Imported Cars

Group numbers, also known as part classification codes, are essential for:

• Insurance claims – Ensuring accurate replacement part valuation.
• Mechanics and repairs – Helping professionals source the right components.
• Custom builds – Matching aftermarket upgrades with OEM specifications.

For rare or imported vehicles, these numbers are often harder to find due to limited documentation, discontinued parts, or regional variations.

The Impact of Global Supply Chain Issues

Recent disruptions in the automotive supply chain have made sourcing parts for rare cars even more difficult. With factories shutting down during the pandemic and shipping delays continuing, having the correct group number ensures you don’t waste time ordering incompatible components.

Where to Find Group Numbers for Rare Cars

1. Vehicle Identification Number (VIN) Decoding

The VIN is a goldmine of information. Websites like:
- NHTSA’s VIN Decoder (for U.S. imports)
- EuroCarParts’ VIN Lookup (for European models)
- CarVX (for JDM vehicles)

can break down your car’s manufacturing details, including part groupings.

2. Manufacturer Service Manuals

Many automakers provide digital or printed manuals that list part group numbers. For discontinued models, check:
- eBay or specialty forums for original manuals.
- Online archives like ManualsLib.

3. Dealership and Manufacturer Support

Even if your car is no longer in production, some manufacturers keep records. Contacting a dealership with your VIN can yield surprising results—especially for brands like Porsche or Ferrari, which maintain extensive archives.

4. Online Communities and Forums

Enthusiast groups are invaluable. Platforms like:
- Reddit’s r/cars
- Bring a Trailer forums
- Specific marque clubs (e.g., BMW E30 groups)

often have members who’ve documented part numbers for obscure models.

5. Third-Party Databases

Services like:
- RealOEM (for BMW, Mini, Rolls-Royce)
- Partsouq (for Asian and Middle Eastern imports)
- 7zap (for Russian and Eastern European models)

allow you to search by model, year, and region.

Challenges with Imported Cars

Regional Variations and Discontinued Parts

A Japanese-spec Skyline GT-R may have different part groupings than its European counterpart. Always verify:
- Market-specific codes (e.g., USDM vs. JDM).
- Model year changes (mid-cycle updates can affect part numbers).

Language Barriers

For cars from non-English-speaking markets, translating manuals or dealership communications is crucial. Tools like Google Lens can help decipher Japanese or German documents.

Future-Proofing Your Rare Car Ownership

With the rise of EV conversions and AI-driven part identification, the process is evolving. Companies like Revology Cars now use 3D scanning to recreate discontinued parts, while apps like PartSouq Auto Parts Finder leverage machine learning to match components.

Staying ahead means:
- Digitizing your car’s documentation.
- Networking with other owners.
- Exploring emerging tech solutions.

By mastering the art of finding group numbers, you ensure your rare or imported car remains roadworthy—no matter where it came from.