A fuel pump search may begin with a worn number, or with an engine model and no obvious product match. Both are common. Existing markings, equipment records and visible features can provide useful clues together. The guide below starts with the information you already have and suggests how to take the next step.
Start with the visible markings
Photograph accessible nameplates, engravings and labels, retaining all letters, digits and separators. Include enough surrounding detail to show where each marking appears. Keep unreadable characters as questions.
A component may have several markings. Record them separately by location rather than combining everything into one assumed model number. Preserve the original images for later checking.
Connect equipment records with the old part
Include the engine model, equipment type and relevant parts records. Explain whether an older purchasing or service document refers to the current equipment, a previously replaced part or another reference product.
If the equipment record and existing marking differ, share both sources. Do not discard one before the difference has been reviewed. The complete context helps define the question accurately.
Use connection details as extra clues
Provide overall views and photographs of connections, mounting positions and visible attachments. Identify the feature in question with a short note. Both the overall context and readable markings matter.
Images do not establish unconfirmed dimensions or specifications. Include reliable measurements with their units and source when available; otherwise leave those details for further confirmation.
Bring your questions to the discussion
Organise the source of each number, equipment information, photographs and quantity under one item reference. Update that record as additional documents or clearer images become available.
A partial number or a photograph is still a useful place to begin. Tell us what is confirmed and what remains unclear, and we can review the available clues. Similar models need checking against the equipment information; appearance alone does not confirm suitability.