Starter sourcing usually starts with a number, but one number rarely tells the full story. A useful catalog should connect Part No., source SKU, OE number, Lester number, MFR, voltage, rotation, teeth count, and fitment notes.
OE numbers usually come from the vehicle or equipment manufacturer. Lester numbers are widely used aftermarket cross-reference identifiers. Replacement numbers may come from distributors, rebuilders, or service catalogs. These values can overlap, but they should not be treated as identical without confirmation.
When a buyer submits only one number, the supplier may still need to verify the product family. Teeth count, rotation, mounting, voltage, starter type, and application market can separate two parts that look similar in a spreadsheet.
For B2B inquiry, the safest workflow is to submit every reference available. Add old unit photos, label images, vehicle make and model, engine, market, and quantity so Crankvia can compare the references before quote preparation.
Cross-reference data should be used as a matching path, not as final installation approval. Final ordering should still be confirmed against OE number, vehicle configuration, engine, and market.