The short answer
A VT reference identifies our catalogue entry. An original or OEM reference identifies a manufacturer’s component where that reference is supplied. A producer reference identifies the supplied part in its producer’s catalogue. These are useful cross-checks, not interchangeable labels.
What does a VT reference tell me?
It is the identifier used by the Vintage Tractors catalogue. Include it when asking about a part so the workshop can find the same listing. It does not, on its own, establish compatibility with your tractor.
What should I compare with an original part number?
Compare the number on the component, or in the relevant parts documentation, with the original references shown on the product page. Read the complete number carefully. If a number is worn, incomplete or ambiguous, share a photograph and ask before ordering.
A real example from the catalogue
| Part | Information Sign “Zuerst Kupplung durchtreten” |
|---|---|
| VT catalogue reference | 100204 |
| Original references as listed | 003393001 |
| Tractor fitment as listed | all 1xx, all 2xx, all 3xx, all 4xx |
These values come from the public catalogue record captured on 12 November 2026. They illustrate the different identifiers; confirm the application for your own tractor.
What if the numbers do not match?
Do not guess from a similar photograph. Check the full model designation, dimensions and any history of replacement assemblies. A decades-old tractor may no longer have every component it left the factory with.
What should I send the workshop?
- Your tractor’s full model designation and identification details.
- The VT reference or link to the part you are considering.
- The number on your existing component, with a clear photograph if possible.
- The measurements or differences that need checking.
Is a Vintage Tractors reference the original Porsche part number?+
No. A VT reference identifies a product in the Vintage Tractors catalogue. Original or OEM references, where supplied, are listed separately and should be compared with the number on the existing component or in the relevant parts documentation.
Can I order a part using only a matching number?+
A matching reference is useful, but you should also check the model, specification, dimensions and any modifications to your tractor. Ask the workshop if the reference or application is uncertain.
Based on the product identifiers and fitment fields in the Vintage Tractors public catalogue. This guide explains identification, not installation procedures or an independent compatibility guarantee.