Who Can Use WebAutoCats.com for Auto Parts Lookup?
WebAutoCats.com is a catalog and archive-style resource for looking up original equipment manufacturer (OEM) parts information across several European and American vehicle brands. It is best suited to people who already know roughly what they need and want to trace a genuine part number or diagram — owners, mechanics, parts dealers, and restorers. It is not a storefront, so do not expect purchase, pricing, or official certification services from it.
What WebAutoCats.com actually is
The site describes itself as a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools. In practice, its stated focus is genuine auto parts catalogs, organized by the factory catalog system each manufacturer uses:
- ETK — BMW, Mini, Rolls-Royce
- ETKA — Audi, Seat, Skoda, Volkswagen
- PET — Porsche
- EPC — Mercedes, Smart, Buick, Cadillac, Chevrolet, GMC, Hummer, Oldsmobile, Pontiac, Saab, Saturn
These are the same catalog families that dealers and independent shops have used for decades to identify OEM components. WebAutoCats positions itself as an entry point to that kind of lookup rather than as the manufacturer or an authorized distributor.
Who gets the most value from it
Vehicle owners and enthusiasts
If you need to confirm the exact part number before ordering from a dealer or an aftermarket seller, a catalog lookup is the standard first step. This applies whether you are maintaining a daily driver or restoring an older model.
Independent mechanics and technicians
When a customer arrives with a vague description, a parts diagram tied to a VIN or model year narrows the search fast. Having several brands' catalog systems reachable from one place reduces tab-switching.
Parts dealers and resellers
Cross-referencing a number against the factory catalog helps confirm fitment before quoting a customer, especially for the many GM and Mercedes nameplates listed under EPC.
Restorers of older or discontinued models
Catalogs for brands like Oldsmobile, Pontiac, Saturn, and Hummer are useful precisely because those marques are no longer active, and factory diagrams remain a reliable reference for what originally fit.
What it is not
The available site information does not indicate any of the following, so treat them as unconfirmed rather than assumed:
- No stated pricing or payment system — nothing in the source material points to checkout, subscriptions, or paid tiers, so do not assume it is free or paid either way.
- No stated login requirement — access conditions are not described.
- Not an official manufacturer service — it is a third-party catalog resource, not a brand's own portal.
- Not a parts seller — it provides lookup, not inventory or fulfillment.
How to decide whether to use it
| Your situation | Reasonable fit? |
|---|---|
| You need an OEM part number for one of the listed brands | Yes — this is the core use case |
| You want to buy the part immediately | No — use a dealer or parts retailer |
| You need pricing or stock availability | No — not indicated as offered |
| You work across multiple European brands | Yes — ETK, ETKA, and PET are grouped together |
| You work on GM or Mercedes-family vehicles | Yes — covered under EPC |
| You need official warranty or certification documents | No — not an official manufacturer channel |
Practical starting point
- Identify which catalog system matches your vehicle (for example, ETKA for a Volkswagen, EPC for a Chevrolet).
- Have your model, year, and ideally VIN or engine code ready — factory catalogs are organized by these, not by part name.
- Use the diagram or group structure to narrow to the assembly, then read the part number.
- Verify the number with a dealer or a reputable parts supplier before ordering, since catalog data can lag behind supersessions and revisions.
The main limitation to keep in mind: a catalog tells you what was specified, not what is currently in stock, what it costs, or whether a newer number has replaced it.