: Manufacturers frequently change part designs (like water pumps or timing belts) at a specific engine serial number. TecDoc allows users to see these "up to engine number" or "from engine number" constraints.

When using the TecDoc Alliance platform or a webshop powered by TecDoc data, the search process typically follows these steps: : Select the make, model, and engine type.

: If multiple engine versions appear for your model, select the specific Motornummer.

In the automotive industry, relying solely on the vehicle model (e.g., "VW Golf VII") is often insufficient. Here is why the TecDoc Motornummer is the gold standard for accuracy: