Editorial Policy

How we decide what to publish, which sources we accept, and how we correct mistakes.

Last updated

Our standard

We state that a part is compatible with a machine only when an official source supports that statement and we cite that source on the page. If we cannot verify a claim, we do not publish it as fact.

Sources we use

Compatibility is researched from official documentation, in this order of preference:

  1. the manufacturer's website;
  2. official instruction manuals;
  3. official parts catalogues and parts lists;
  4. official service documentation;
  5. authorised distributors, only when no primary source is available. When we rely on a distributor, we record why a primary source could not be used.

We do not treat marketplace listings, unofficial sellers, forum posts or product photos as evidence of compatibility.

What we never do

  • We never infer compatibility from a nominal size (such as 54 mm or 58 mm), from appearance or from similar names. Several different parts share the same size and even the same official name.
  • We never invent model numbers, part numbers, dimensions or specifications.
  • We never merge regional versions. When a model or part has different numbers in different markets, we keep them as separate entries unless an official source explicitly states that they are equivalent.
  • We never present an unconfirmed match as compatible. Unconfirmed research is kept off the site.

How a listing is verified

  1. We identify the machine by its full model number and the markets where that number is documented.
  2. We locate official documentation that names the machine and the replacement part.
  3. We record the part number, the relevant details and the source, including the date we accessed it.
  4. We check every technical statement on the page against the cited source before it is published. Each published specification is linked to its source.
  5. We record the review date, which is shown on the page.

We also record explicit incompatibilities when an official source states them, because knowing what does not fit is as useful as knowing what does.

Our three statuses

  • Confirmed: an official source names the exact model code and the exact part number together. We quote that wording on the page.
  • Not compatible: an official source explicitly says the part does not fit that model. We quote it.
  • Unconfirmed: anything else, including pairings that are plausible but not stated, and pairings where two official sources contradict each other. Unconfirmed pairings are never shown as compatible. Where a contradiction affects a model or part we cover, we explain it on that page.

Limits of manufacturer listings

Some manufacturer pages show only part of their compatibility list in the page itself and load the rest on request. We list only the models we could read on the official page; when a list is incomplete we say so on the part page. A model missing from our list is therefore not proof that a part does not fit — only an explicit statement is.

Manufacturer listings can also be wrong. When a listing contradicts another official statement (for example a 54 mm accessory listed for a machine the same manufacturer describes as 58 mm), we do not publish the pairing.

Use of software and AI tools

We use software, including AI tools, to help organise research, structure data and draft or edit text. These tools are not a source of facts. Every technical statement, including model numbers, part numbers, specifications and compatibility, is checked against the cited official sources before publication. Information that cannot be confirmed this way is not published as fact.

Review dates and updates

Every compatibility page shows when it was last reviewed. Manufacturers change their products and documentation, so we re-check listings when sources change or when readers report a problem, and we update the review date when we do.

Pages without enough information

We do not publish thin pages to fill out the catalogue. A model page is offered to search engines only when it lists several confirmed parts, and a part page only when it adds something beyond the rows it already occupies on model pages: several confirmed models, an explicit incompatibility, or a look-alike part it must not be confused with. Other pages remain available to visitors but are marked noindex.

Corrections

If you believe something on the site is wrong or out of date, please contact us with the page address and, if possible, a link to the official documentation. We review every report against the sources and correct confirmed errors. Where a correction changes compatibility information, the page's review date is updated.

Independence and commercial relationships

We are not affiliated with any manufacturer, and no manufacturer or seller pays to be listed. Advertising and affiliate links, where the site uses them, are described in our advertising and affiliate disclosure. Commercial relationships never decide which parts we list as compatible.

Who publishes this site

The site is run by Javier Contreras, trading as EspressoPartMatch, and all content is published under the EspressoPartMatch name. We do not attribute content to individual experts or technicians, and we do not claim professional repair qualifications: every listing rests on the cited manufacturer documentation, not on personal expertise.